Hexenic acid
[化] 己烯酸
🧩 词语组成解析
🗣️ 情景例句
Why don't we just check out?
那何不立即结帐离开呢？
I will have done it by the time you come back.
在你回来之前，我会做完它。[将来完成时，表示将完成…，会做完…]
the necessary method of study is to group the relevant material and to take note of all possible variant forms and conditions.
应采取的研究方法是，把有关各方面的材料汇集起来，同时注意任何可能出现的异常情况和条件。