Catalysant
被催化物
🗣️ 情景例句
I did , but everything is OK,so I decided to come back.
回去了， 但一切安好。于是我决定回来。
My brother wants to learn how to play the piano.
我的兄弟要去学弹钢琴。
I looked out of the window.It was dark outside.
我望望窗外，外面一片昏暗。