Prevulcanize
预先硫化, 早期硫化
🗣️ 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。
My sister worked as a secretary before she got married.
在她结婚了以前，我的姐姐为一位秘书。
He opened it and saw the man from downstairs.
他打开门，看见楼下人。