Wathlingite
镁硬石膏
🗣️ 情景例句
We might need you to come through with your friends, Robbie.
我们也许需要你们多邀朋友来帮忙， Robbie。
He's a teather.
他是教师。
He was just falling asleep when there was a loud knock at the door.
他刚要入睡，就有人很响地敲门。