Nitrourea
硝基脲
🗣️ 情景例句
I love being with them.
我喜欢和他们在一起。
It is good to learn at another man's cost.
前车之覆，后车之鉴。
The holes are only borings, less than a foot in diameter.
这些洞只不过是一些钻孔，直径不到1英尺。