英语四级真题中 when 引导的从句

Davida Herzl, Aclima's boss, says they have revealed pollution highs on days when San Francisco's transit workers went on strike and the city's inhabitants were forced to use their cars.

Aclima的老板Davida Herzl表示，他们已经揭示了在旧金山公交工人罢工且该市居民被迫使用私家车的日子里的污染高峰。

It's the stage in the middle of the journey when people feel youth vanishing, their prospects narrowing and death approaching.

这是旅程中途的阶段，此时人们感到青春消逝、前途变窄且死亡临近。

Late November and December saw early snow and bone-chilling temperatures in much of the country, part of a year when, for the first time in two decades, record-cold days will likely turn out to have outnumbered record-warm ones.

11月下旬和12月，美国大部分地区出现了初雪和刺骨的低温，这是二十年来首次创纪录的寒冷天数可能超过创纪录温暖天数的一年的一部分。

But we have a higher risk of consuming more than the recommended daily number of calories (around 2,000 for women and 2,500 for men) on the days we drink juice, according to research.

但根据研究，在我们喝果汁的日子里，我们有摄入超过每日推荐卡路里数量（女性约2000，男性约2500）的更高风险。

He said most Indiana schools already use digital devices during lessons, so it was an "easy decision" to extend this to days when schools are closed.

他说印第安纳州的大多数学校已经在上课时使用数字设备，所以将此扩展到学校关闭的日子是一个“容易的决定”。

It is also cheap, at a time when many are worried about what the economic future holds.

它也很便宜，在许多人担心经济未来会带来什么的这个时期。

Perhaps this is because older people had fewer options when they were starting their careers, at a time when values focused more on stable incomes than fulfilling personal missions.

也许这是因为年长者在开始他们的职业生涯时选择更少，在一个价值观更注重稳定收入而非实现个人使命的时代。

You know that part at the end of a job interview when the hiring manager asks if you have any questions, and you just stare across the table blankly with your mouth hanging open?

你知道在求职面试结束时的那个环节吗？招聘经理会问你是否有任何问题，而你只是目瞪口呆地盯着桌子对面，嘴巴张着。

The day before I spoke to Martinez in November, he had been touring the damage from Hurricane Michael in Florida with the American Red Cross.

11月我和马丁内斯交谈的前一天，他一直在佛罗里达州与美国红十字会一起查看飓风迈克尔造成的破坏。

Francesca Haass, a senior at Middlebury, says, "I find the in-class ones are more stressful in the short term, but there is immediate relief as you swallow information like mad, and then you get to forget it all. Take-homes require thoughtful engagement which can lead to longer term stress as there is never a moment when the time is up."

明德学院大四学生弗朗西斯卡·哈斯说：“我发现课堂测验在短期内压力更大，但当你拼命吸收信息时会立即感到解脱，然后你就可以把它全忘了。家庭作业需要深思熟虑的参与，这可能会导致长期压力，因为从来没有时间结束的那一刻。”

The burger business faces more pressure from regulators at a time when it is already adapting strategies in response to shifts in the global economy.

汉堡行业在已经为应对全球经济变化而调整策略的时期，面临着来自监管机构的更大压力。

Even so, there have been a very small number of cases recently when authorities discovered eggs during further inspections.

即便如此，最近还是有极少数案例，当当局在进一步检查期间发现了鸡蛋。

But they're leading to safety concerns, mainly at night when some riders don't follow the rules of the road.

但它们正导致安全隐患，主要是在夜间，那时一些骑手不遵守道路规则。

The researchers found that the time when a person starts school has an enduring impact on their lives.

研究人员发现，一个人开始上学的时间对他们的生活有持久的影响。

Our recently published study answered this question by tracking a large national random sample of Americans over a critical time period when bodies change from teenage shape into adult form and when people build their identities.

我们最近发表的研究通过追踪一个大型全国性随机美国样本，在一个关键的时间段内回答了这个问题，在该时间段内身体从青少年形态转变为成人形态，并且人们构建他们的身份。

The package is too big and it needs a signature to confirm you have received it, so I would need to deliver it at a time when you are in.

这个包裹太大了，并且它需要一个签名来确认你已经收到它，所以我需要在你在家的时候递送它。

It happens when the parts of your brain used for learning, memory, decision making, and language are damaged or diseased.

当大脑中负责学习、记忆、决策和语言功能的部位受损或患病时，就会出现这种情况。

We were going to my wife's big family reunion in Auckland, New Zealand, but when we found out that Great Barrier Island, just off the coast, had been recently awarded Dark Sky Sanctuary status—a typically remote area that has an "exceptional or distinguished quality of starry nights"—we thought it would be the perfect place to relax before our busy schedule.

我们原本打算去新西兰奥克兰参加我妻子家族的大型聚会，但得知就在海岸外不远处的大堡礁岛最近获评为“暗夜星空保护区”——这类地方通常地处偏远，拥有“非凡或独具特色的星空夜色”——我们觉得，在忙碌的行程开始前，那里会是放松身心的完美去处。

The man told authorities that his experience began in December when currents swept the sailboat out to sea while he was making repairs.

这名男子告诉当局，他的遭遇始于12月，当时他正在维修帆船，海流却将船冲向了大海。

When one of my wife's relations, who comes here regularly, found out that we'd been there, he whispered to us, only half-joking: "Shh—don't tell anyone!"

我妻子的一位经常来这里的亲戚得知我们去过那里后，半开玩笑地低声对我们说：“嘘——别告诉别人！”

Over 50 years ago, researchers found that the cholesterol drug simvastatin is more effective at lowering cholesterol levels when taken at night rather than during the day.

50多年前，研究人员发现，降胆固醇药物辛伐他汀在夜间服用比在白天服用时，在降低胆固醇水平方面更有效。

One survey taker explained, "The greatest challenge for me was continuing to believe in myself, when all the messages I was getting were that I would never be taken seriously or promoted or given raises at the same rate as men, who were clearly less qualified and not as smart as I was."

一位调查受访者解释道：“对我来说最大的挑战是继续相信自己，当我得到的所有信息都是我将永远不会被认真对待、不会被晋升、不会以与男性相同的速度获得加薪时，这些男性显然不如我合格且不如我聪明。”

At whatever grade level teachers find themselves, from kindergarten to the final class at medical or law school, few moments stir the emotions as deeply as when former students reappear years and often decades later with an update on where their journey has taken them and what resiliencies(韧性) have been the pavement on which they've traveled.

无论教师们身处哪个年级，从幼儿园到医学院或法学院的最后一堂课，很少有时刻能像多年甚至数十年后以前的学生再次出现时那样深深触动情感，他们会讲述自己的人生旅程走向何方，以及哪些韧性是他们一路走来的铺路石。

So it was when a recent letter came from Kelli Harding, a student 21 years ago in my Peace Studies summer course in Washington.

情况就是如此，当最近一封来自凯莉·哈丁的信寄到时，她是21年前在华盛顿我开设的和平研究暑期课程上的一名学生。

But carrots got their biggest boost during the two world wars, when food shortages forced people to eat them, and governments told everyone how healthy carrots were.

但是胡萝卜在两次世界大战期间得到了最大的推动，当时食品短缺迫使人们食用它们，并且政府告诉每个人胡萝卜是多么健康。

My mother's criticism had shown me that Kafka is right about the cold abyss, and when you make the introspective(内省的) descent that writing requires you are not always pleased by what you find.

我母亲的批评向我表明，卡夫卡关于冰冷深渊的看法是正确的；并且当你进行写作所需的内省式下沉时，你并不总是对你所发现的东西感到满意。

What happens when a person permanently underestimates their own abilities?

当一个人长期低估自己的能力时，会发生什么？

W: Why would you do something like that, when our phones make our lives so much more convenient?

W：我们的手机让生活变得如此便利，你为什么还要做那种事呢？

The sailboat was abandoned at sea when the man was picked up by a nearby merchant ship.

那名男子被附近的一艘商船救起时，帆船已被弃置在海上。

For example, when asked where you see yourself in five years, we don't want to know that you hope to be married or that you want to buy a new house.

例如，当别人问你五年后希望成为什么样的人时，我们并不想知道你是否希望结婚，或者是否想买一套新房。

After a 28-hour flight with two travel-sick children, our hearts sank when we saw the tiny twin engine 10-seater that was to take us the 90km across the Hauraki Gulf to Great Barrier Island.

经过 28 个小时的飞行，还带着两个晕机的孩子，当我们看到那架即将载着我们飞越豪拉基湾、前往大屏障岛的小型双引擎十座飞机时，心都沉了下来。

When we asked mothers and children to discuss moral issues, such as whether it is OK to play with a child who has stolen someone else's snack, they linked this type of moral wrongdoing with the emotion of anger and not disgust.

当我们让母亲和孩子讨论一些道德问题时，例如是否可以和偷了别人零食的孩子一起玩，他们将这类道德过错与愤怒这种情绪联系起来，而不是与厌恶联系起来。