Catalysant
被催化物
🗣️ 情景例句
This has been a hard course for me.
这门课对于我来说很难。
Goodbye. Hope to see you again next year.
再见。希望明年再见到你。
It is tomorrow that they will have a meeting.
就在明天（而不是在别的某一天）他们要开会。