Nitroguanidine
n. [化] 硝基胍
🗣️ 情景例句
Well, I guess we all have to take our mind off work once in a while.
对，我们都应该忙里偷闲。
Soft fire makes sweet malt.
慢工出细活。
Between 1850 and 1910 the bison population is thought to have fallen from 60 million to just a few hundred.
人们认为，在1850年到1910年之间，野牛的头数从6，000万头降到只有几百头了。