Macroprecipitation
常量沉淀
??? 情景例句
Typing is easy once you get the hang of it.
一旦你掌握訣竅，打字就很簡單。
Would you like to arrange for a personal interview?
你想安排面談嗎？
I don't know what you're talking about.
我不知道您在說些什么。