The hawk took one hop that brought it within slashing distance of his hand.

老鹰跳了一跳，使它离他的手很近。

I did, you said the only math biologists know is if you have three frogs and one hops away, that leaves two frogs.

我有啊，你说生物学家唯一懂的数学，就是如果有三只青蛙，一只跳走了那还剩下两只。