Bombycin
蚕素
🗣️ 情景例句
which we made clear at the beginning of the negotiation.
关于这一点，我们早在开始谈判时期就讲明了。
No matter what comes up, don't look back.
不论发生什么事情，你也不要回头看。
Who won the girls' 400 metres?
女子400米赛跑谁获胜？