Butyolactone
[建] 丁内酯
🗣️ 情景例句
Oh yes, yes. My husband's there now.
啊， 对 对。我丈夫现在就在那儿。
A fox may grow grey, but never good.
狐狸会变，但本性难移。
I often fish for hours without catching anything.
我经常一钓数小时却一无所获，