Pentynoic acid
[化] 戊炔酸
🧩 词语组成解析
🗣️ 情景例句
I can't answer that one.
我回答不出那个问题。
That's a good idea.
那是一个好主意。
She has been helping her husband for thirty years now.
她已经帮了她的丈夫30年了。