回复:for two guys above: be rational instead of emotional

来源: 2010-05-14 07:54:30 [博客] [旧帖] [给我悄悄话] 本文已被阅读:

I saw your answer below. I was thinking along the same line. If the duck swim to shore at an angle, the fox can run the shorter circle. Is there a way for the duck to counter this?