Biotoxin
生体毒素
🗣️ 情景例句
In my opinion, winter in Beijing is not very cold.
我觉得北京的冬天不是特别冷。
He already has a phonograph,but he doesn't have a radio yet.
他已经有一架留声机，但是他还没有收音机。
We felt sure that sooner or later a stone would rip a hole in our petrol tank or damage the engine.
我们想念迟早会飞起一个石块把油箱砸开一个窟窿，或者把发动机砸坏。