Wathlingite
镁硬石膏
🗣️ 情景例句
Well, thank you, Mr. Maxwell.
噢， 谢谢你， Maxwell先生。
Can I have a day off?
我能请一天假吗？
After having spent whole mornings on the river, I always go home with an empty bag.
我总是在河上呆上整整一上午，然后空着袋子回家。