Levulinamide
4-氧(代)戊酰胺
🗣️ 情景例句
He started out on a voyage around the world.
他开始周游世界。
A useful trade is a mine of gold.
一样有用的手艺是取之不尽的财富。
By bus. This little girl brought me.
乘公共汽车。这个小姑娘带我来的。