Karstenite
硬石膏
🗣️ 情景例句
Oh, hello! How nice of you to remember us!
噢， 好， 真好， 还记得我们！
To fall off a bench
从长椅上掉下来
It was my first flight. I was nervous when the plane took off.
我第一次坐飞机，起飞时我有点紧张。