Some children undergo a complete transformation when they become teenagers.
一些儿童进入少年期会完全变成另一个人。
His films begin with facts, but then they become more and more fictional.
他的电影从事实出发，但后来它们变得越来越小说化。
A lot of teens try not to lose the friendship once they become friends with some people.
很多青少年一旦和一些人成为朋友，便试图不失去友谊。
Over time, the costs of processing go down because as organizations learn how to do things better, they become more efficient.
随着时间的推移，处理成本会降低，因为随着组织学会如何把事情做得更好，它们会变得更有效率。
Pests often target specific tree species and, if they become established, they usually remain as permanent components of the ecosystem.
害虫通常以特定的树种为目标，一旦形成，它们通常会成为生态系统的永久组成部分。
Consequently, much effort has been spent on identifying students with problems in order to give them more attention before they become failures.
因此，人们花了很多精力来发现学生的问题，以便在他们失败之前给予他们更多的关注。
The harder rocks push against each other, the hotter they become; in other words, pressure itself, not only the rocks' properties, affects frictional heating.
岩石相互推挤得越厉害，它们就会变得越热；换句话说，不仅是岩石的性质，压力本身也影响摩擦加热。
According to entomologists, single locusts are quiet creatures, but when locusts are placed with others of their species, they become excited, change color, vibrate, and even hum.
根据昆虫学家的说法，单个的蝗虫是安静的生物，但是当它们和同类的其他蝗虫放在一起时，它们会变得兴奋，变色，振动，甚至嗡嗡叫。
All too often they become enmeshed in deadening routines.
他们时常陷入枯燥的日常事务中。
He plays some passages so slowly that they become lugubrious.
有些段落他演奏得如此徐缓，听上去有些忧伤。
If they become popular, there will surely be too much air traffic.
如果它们变得受欢迎，就一定会出现过多的空中交通。
Do you know that butterflies live three separate lives before they become the flying insects we all know?
你知道蝴蝶在变为我们所熟悉的飞虫形态之前，经历过三种不同的形态吗？
Our dear parents make every effort to bring us up, so we are supposed to treat them well when they become old.
我们亲爱的父母尽一切努力把我们养大，所以当他们老去时，我们应该善待他们。
We must protect these endangered animals before they become extinct.
在这些濒危动物灭绝之前，我们必须保护它们。
The concrete apartment blocks show their age and they become unfit for human's habitation.
混凝土公寓楼明显老化，已经不适合人类居住了。
This forces the liar to expand on their tale until they become entrapped in their own web of deceit.
这迫使说谎者详述他们的故事，直到他们陷入自己的欺骗网中。
Why people are so excited about embryonic stem cells is because in nature they become all the cells of the body.
胚胎干细胞如此让人激动是因为它的天然功能就是分化成身体所有的细胞。
Usually, this is accomplished by means of sticky traps, a kind of fly paper on which they become increasingly stuck.
通常，这是通过粘捕器来实现的，这是一种苍蝇纸，它们在上面越来越粘。
People get exposed to a great deal of marketing for products in which they have no interest and so they become annoyed.
人们会接触到大量他们不感兴趣的产品营销，因此他们会感到烦恼。
Indigenous and environmental groups, including Greenpeace, say that many parts of the Andes will suffer if they become over-developed.
包括绿色和平组织在内的土著和环保组织表示，如果过度开发，安第斯山脉的许多地区将会受到影响。
They become completely involved in an activity for its own sake rather than for what may result from the activity, such as money or prestige.
他们完全是为了活动本身而参与活动，而不是为了活动可能带来的结果，如金钱或声望。
As they become entwined with each other politically and economically, Europeans need a way to talk to one another and to the rest of the world.
随着欧洲人在政治和经济上相互交织在一起，他们需要一种相互交流和与世界其他地区对话的方式。
He also believes they will be more likely to trust self-driving cars as they become more familiar with features such as automatic braking or parking.
他还认为，随着他们越来越熟悉自动刹车或自动停车等功能，他们会越来越信任自动驾驶汽车。
Active learners are constantly monitoring their understanding, they know when their comprehension breaks down, and they ask for help before they become lost.
主动学习者不断地监测自己的理解，他们知道自己的理解什么时候出现了问题，在迷失方向之前就会寻求帮助。
The research argued that boys often perform badly in mixed schools because they become discouraged when their female peers do better earlier in speaking and reading skills.
研究认为，男孩通常在男女混合学校的表现不好，因为当其女性同龄人比他们更快地在口语和阅读技能上做得更好时，他们会灰心。
Other epigenetic processes appear to occur randomly, while others are normal, such as those that guide embryonic cells as they become heart, brain, or liver cells, for example.
其他的表观遗传过程似乎是随机发生的，而其他过程则是正常的，比如那些引导胚胎细胞成为心脏、大脑或肝细胞的过程。
In other words, they become asthmatic.
换言之，肺部成哮喘肺了。
They become carriers of dollar liquidity across borders.
这些外国银行便成为了美元跨境流动的载体。
Identify and manage risks before they become disasters.
发现风险，管理风险，避免灾难。
They become the principal supplier of grain and fish in Europe.
他们成为欧洲谷类和鱼产的主要供货商。
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