Dinitrodiazophenol
二硝基重氮酚
🗣️ 情景例句
Will it take long?
要很久吗？
My book has a dark blue cover.
我的书有一个深蓝色的封面。
The winch was again put into operation and one of the men started up the truck.
绞盘机再次启动，一位工人发动了急修车的引擎。