Methaldehyde
四聚乙醛
🗣️ 情景例句
I guess I am.
我想是吧。
Did you go to the party yesterday?
你昨天去参加聚会了吗？
After chipping through a wall which was eighteen inches thick, they found that a man had been trapped in the chimney.
他们凿透了18英寸厚的墙壁，发现有个人卡在烟囱里。