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Even if a nuclear explosion took place and everything on earth got atomized and destroyed, through some bizzare science fiction chain reaction. They always do in the movies.
即使发生核爆炸,像某些离奇科幻小说里描述的，的连锁反应那样，一切都毁灭了,电影里经常可以看到的场面。
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They're colored different here to indicate one new difference that you know about now, and that's that there is an orientation, there's an up and down on the chain.
这里被涂成不同的颜色,来表示另一个不同之处,它是有方向的,表示双链一条向上,一条向下
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On The Border is like a Mexican chain restaurant.
边境是一家墨西哥菜连锁餐馆
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You can just say it's RNA or DNA and you know everything about the pentose in every molecule on the chain.
你只需要说它是一个RNA或者DNA,就能知道,每个核苷酸分子的戊糖
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If I wanted to link another nucleotide to this DNA chain what would I attach here on the bottom?
如果想把另一核苷酸连接到这条DNA链,我将会在DNA链末端添加什么
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