Nitrocobalamin
硝钴胺
🗣️ 情景例句
Clothes make the man.
人要衣装，费要金装。
Actions speak louder than words.
事实胜于雄辩。
The slope averages about 1 in 30, but contains steep,
坡度平均约为1/30，但其中包括陡峭的，