Paraldehyde
n. [化]仲(乙)醛,三聚乙醛
🗣️ 情景例句
What did I tell you?
我不是告诉过你吗？
Did you go camping this morning?
你今早去露营了吗？
Work on it had begun before my sister left.
这栋房子在我姐姐离开之前就已动工了，