Cocatalyst
助催化剂
🗣️ 情景例句
It was a pleasure having you. Please come again.
和你在一起我们非常荣幸，请有空常来。
Provide for the worst, the best will save itself.
作最坏的准备，可以得到最好的结果。
There is only one difference between an old man and a young one:
老年人和年轻人之间仅仅有一个不同：