Tetrahydroxide
四羟化物
🗣️ 情景例句
Yes, my husband did call.
是的， 我丈夫打过电话。
What kind of look is that?
你那时什么脸？
While early settlers had killed bison for food, now the killing became more widespread.
早期的殖民者只是以杀野牛为食，这时屠宰野牛就更为广泛了。