Hydroxycarbonyl comopound
[建] 羟基羰基合物
🗣️ 情景例句
You can't expect to learn a foreign language in a week.
别指望一个星期就能学会一门外语。
This is your last chance. I believe you can make it.
这时你最后的机会，我相信你会成功的。
There were hardly any trees on the island and there was no water, but this did not prove to be a problem.
岛上几乎没有一颗树，也没有淡水，但这不算什么问题。