Biotoxin
生体毒素
🗣️ 情景例句
Nice talking to both of you.
很高兴与两位交谈。
I hadn't planned on swimming across the whole lake.
我可从没计划要游过整个湖。
Yes, it is. You need to wear warmer clothes.
是啊，你应该穿得更暖和些。