Validacin
有效霉素
🗣️ 情景例句
It hurts, doesn't it?
会痛 ，是不是？
The greatest fool is he who worries about what he cannot help.
操心无法可想的事是最大的傻瓜。
What about when we leave?
我们离开实验室又该做些什么呢？