Biotoxin
生体毒素
🗣️ 情景例句
Can you speak English?
你会讲英语吗？
The times of comradeship in sports and play are full of meaning.
这个通过运动或游戏培养友情的时代，是极有意义的。
I had a seat beside the window.
我的座位在窗口旁