Lactones
(lactone 的复数) n.[化] 内酯
🗣️ 情景例句
I'm afraid Tony's days are numbered.
恐怕托尼快要被解雇了。
Jean's mother warned her that men would try to take advantage of her.
琼的母亲警告她，男人会占她的便宜。
Don't crowd round him, said the gate keeper.
“不要围着他，”学校门卫说。