Will you answer the telephone if it rings?

电话铃响时你接一下好吗？

《牛津词典》

And if it rings when I get to three hundred, I wont stop;

要是我数到三百电话就响了，我也不会停下来；

youdao

There is something wrong with my phone. Could you call it for me to see if it rings?

我的手机出问题了，你能给我打过来吗，我看看响不响！

youdao

It wouldn't be the same if I turned it upside down because the carbons - the rings here, the pentose's would all be turned over, the chemistry would look different and the sequence of bases would look different.

记住单链倒过来,就和原来不一样了,这是因为碳原子和糖环结构,戊糖会翻转,使得这个化学结构看起来不一样了,碱基的顺序也不一样了

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