Aerofloats
二乙基二硫代磷酸盐
🗣️ 情景例句
My friend's a chain smoker.
我的朋友烟瘾很重。
How did he get away with cheating?
他是如何考试做弊而未被发现？
What was the population of the more developed countries in 1950?
1950年较发达国家的人口是多少？