Proelastase
弹性蛋白酶原
🗣️ 情景例句
Did they write some bad news?
他们写了什么坏消息吗？
Humility is the foundation of all virtue.
谦逊是一切美德的基础。
They are arguing over who should pay the bill.
他们为谁应该付款而争论不休。