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。
他们成为英雄了吗？
They become elastic like rubber bands.
它们变得像橡皮筋一样有弹性。
They become more emotionally aggressive.
他们在情感上变得更具攻击性。
They become angry, unhappy, sad and lonely.
他们变得愤怒、不悦、难过而孤独。
They become self-conscious and don't want to appear stupid.
他们变得有自我意识，且不想显得愚蠢。
They become less identifiable, more generalizable to any audience.
它们变得更难以识别，更容易被所有观众接受。
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。
他们成为了真正的海盗。
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。
Have they become somehow massively more expensive to educate?
教育是否在某种程度上变得更加昂贵了呢？
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 flying cars won't bring air traffic jam even when they become popular.
飞行汽车即使普及了，也不会带来空中交通堵塞。
One consideration is to ask parents what they want before they become sick or dependent.
要考虑到的一点是，应该在父母生病或失去自理能力之前先询问他们的意愿。
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。
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