Valerolactone
戊内酯
🗣️ 情景例句
I keep thinking about that bag of film. Eight rolls.
我一直在想着旅行袋的事。一共有八卷呢。
My overcoat is red.
我的大衣是红色的。
One moring she was working at her desk in the library when a boy came in.
一天早上，她正在图书馆里伏案工作，这时，一个男孩走进来。