Dichlorodiethyl
sulphide[化]二氯二乙硫醚,芥子气
🗣️ 情景例句
kick off your shoes, and sit down.
脱掉你的鞋子， 坐下来。
Constant dropping wears the stone.
滴水不绝可穿石。
Was there a problem.
出了什么问题吗？