By the time the Chinese silk trade became important in the world, the Silk Road covered almost 6500 kilometers.
到中国的丝绸贸易在世界上变得重要的时候，丝绸之路已经长达6500公里。
Early in his research, Kramer found that caged migratory birds became very restless at about the time they would normally have begun migration in the wild.
在克雷默早期的研究中，他发现被关在笼中的候鸟在它们通常开始在迁徙的大致时间会变得非常不安。
As time passed and work with their respective first clients became more and more difficult, John and Sue realized that they had been assigned two of the toughest clients in town.
随着时间的流逝，和他们各自的第一批客户一起工作变得越来越困难，约翰和苏意识到他们被分配给了镇上两个最难对付的客户。
Around this time, I started playing in a band with a Chinese man who became one of my best friends in Beijing.
大约在这个时候，我开始和一个中国男人在一个乐队里演奏，他成了我在北京最好的朋友之一。
It taught him how to think independently and abstractly about space and time, and it wasn't long before he became a philosopher himself.
它教会了他如何独立、抽象地思考空间和时间，没过多久，他自己也成为了一名哲学家。
This nameless person pushed the human race over a historic threshold, for it was in that year that mankind became, for the first time in its history, a predominantly urban species.
这个无名人士让人类的发展跨出了历史性的一步，因为正是在那一年，人类在其历史上第一次成为主要的城市物种。
By the time the Chinese silk trade became important in the world, the Silk Road had covered almost 6,500 kilometers.
到了中国的丝绸贸易成为世界重要贸易时，丝绸之路已经覆盖了将近6500公里。
Cecilia Beaux was born in 1854, and after learning to paint and studying with several important artists of the time, Beaux became known as one of the best portrait painters in the United States.
塞西莉亚·博克斯出生于1854年，在学习绘画并师从当时几位重要的艺术家后，博克斯成为美国最佳肖像画家之一。
By this time, Mark Antony had palled up with Cleopatra, Queen of Egypt, and Octavian beat both of them, and he became the sole ruler of the empire in 27 BCE.
此时，马克·安东尼已经和埃及女王克利奥帕特拉脱身，而屋大维打败了他们两人，公元前27年，他成为了帝国唯一的统治者。
Because you can't drive a car and watch television at the same time, rush hour became radio's prime time, while music, talk, and news radio greatly enlarged their audiences.
由于不能边开车边看电视，于是交通高峰期成为了广播的黄金时段，音乐节目、谈话节目和新闻广播因而获得了更多听众。
But because you can't drive a car and watch television at the same time, rush hour became radio's prime time, while music, talk, and news radio greatly enlarged their audiences.
但是由于你不能边开车看电视，于是交通高峰期成为了广播的黄金时段，音乐节目、谈话节目和新闻广播因此得到了更多的听众。
There was some fatal flaw in his makeup, and as time went on he lapsed into long silences or became off-hand.
他性格中有某种致命的缺陷，随着时间的推移，他要么陷入长时间沉默要么行为随便。
Although they at that time became part of the United States, the pueblo lands never formally constituted a part of federal public lands.
尽管当时他们成为了美国的一部分，但普韦布洛人的土地从未正式成为联邦公共土地的一部分。
In time, the idea of film became familiar, the magic was accepted—but it never stopped being magic.
随着时间的推移，电影的概念变得很常见，魔术也被接受了——但它的魔力从未停止过。
As feathers became larger over time, flapping flight evolved and birds finally became fully air-borne.
随着时间的推移，羽毛变得越来越大，扑翼飞行逐渐发展，鸟类最终完全可以在空中飞行。
About the time that schools and others quite reasonably became interested in seeing to it that all children, whatever their background, were fairly treated, intelligence testing became unpopular.
大约在学校和其他机构开始很有兴趣确保所有的孩子，无论他们的背景如何，都能得到公平对待的时候，智力测试就变得不受欢迎了。
As time passed, the girl grew up, moved houses, became an adult, married, had children, and finally became a lovely little old woman with many grandchildren.
随着时间的流逝，女孩长大了，搬了家、成人了、结了婚、有了孩子，最后成了一个可爱的小老太太，有很多孙子孙女。
Dressed in their traditional costumes, the castellers seem to epitomize an easier time, before Barcelona became a world metropolis and the Mediterranean's most dynamic city.
在巴塞罗那成为世界大都市和地中海最具活力的城市之前，身着传统服装的叠人塔似乎是一个更安逸的时代的缩影。
Step by step, he rose from one important task to another, until he became one of the best soldiers of that time.
一步一步地，他从做一个重要的任务上升到做另一个重要的任务，直到他成为当时最好的士兵之一。
At the same time, it became clear that the harder manufactures worked to implement cost-cutting, the more they lost their competitive edge.
与此同时，越来越明显的是，制造商越是努力实施成本削减，就失去更多的竞争优势。
"After I became a first-time mother, I quickly realized I was so busy caring for other people and work that I felt like I'd lost myself," she said.
她说：“当我初为人母后，我很快意识到自己忙于照顾其他人和工作，以至于我感觉好像迷失了自我。”
At the time, it became clear that the newly reunified Berlin would need a modern airport with far greater capacity than its existing airports.
当时，很明显，重新统一后的柏林需要一个比它现有机场容量大得多的现代化机场。
Rick Rahim from Virginia flies helicopters for a living, and when his seven-year-old son's tooth became loose he did not waste time by tying it to a door handle.
来自弗吉尼亚州的里克·拉希姆以开直升机为生，当他7岁儿子的牙齿松动时，他毫不犹豫地就把牙绑在门把手上。
From that time, I became interested in the Party.
从那时起，我对党产生了兴趣。
They became closer and closer in a short time.
她们在很短的时间内变得越来越亲密。
As time went by, the boy became very strong and brave.
随着时间的推移，男孩变得非常强壮和勇敢。
As time went on, Lisa became so interested in judo that she opened her own club.
随着时间的推移，丽莎对柔道非常感兴趣，于是她开办了自己的柔道俱乐部。
Although he went through a hard time, the farmer never became discouraged from achieving his goal—providing his village with a clean water source.
尽管经历了一段艰难的时期，这位农民在实现他的目标时从未气馁——为他的村庄提供干净的水源。
Once time became the problem -- not the vanilla ice cream -- the engineer quickly came up with the answer: vapor lock.
一旦时间变成问题-而不是香草冰激凌-工程师很快找到答案：气阻。
Once time became the problem -- not the vanilla ice cream -- the engineer quickly came up with the answer: vapor lock.
一旦时间变成问题-而不是香草冰激凌-工程师很快找到答案：气阻。
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