Sublamine
升胺, 乙二胺合硫酸汞
🗣️ 情景例句
What time is it?
什么时间啦？
Please turn in your paper before leaving.
请在离开前将论文交上。
only of metal, which wears away by friction.
而是由金属组成，而金属可以随着磨擦而磨损殆尽。