Etheride
酰卤化物
🗣️ 情景例句
Sure.
当然可以。
How long will you remain in the United States?
你将会在美国逗留多久？
Mars is too dry and poor in oxygen, Venus far too hot, and so is Mercury,
火星太干燥又缺氧，金星太热，水星也一样。