would this work-- follow up question

來源: novtim2 於 2010-05-09 11:00:48 [] [舊帖] [給我悄悄話] 閱讀數 : (216 bytes)

looks like everybody knows the right answer: swim a smaller circle until it's 180 degree away from Fox, then swim ashore.

but could this work?

鴨子遊到湖心，然後開始向狐狸運動的切線的垂直方向遊
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