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窟：洞穴。狡猾的兔子准备好几个藏身的窝。比喻隐蔽的地方或方法多。
[a wily rabbit has three burrows-elaborate precautions made for self-protection] 狡黠的野兔筑巢时备有相通的三个洞窟。比喻为将来躲避灾祸计虑得十分周密
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