Cocondensation
[化] 共縮合
??? 情景例句
That's relief.
真令人欣慰。
The thread breaks where it is weakest.
線斷常在最細(xì)處。
Yes, it's Bob here. Can you ask him to call me back?
可以，我是鮑勃。你能請(qǐng)他給我回個(gè)電話嗎？