Periclasite
方镁石
🗣️ 情景例句
International travel involves a lot of waiting around in airports.
经常在机场等候是环球旅行的一部分。
Do you like travelling?
你喜欢旅行？
Good morning. Could I have some bottles of milk, please?
早上好。我想买几瓶牛奶？