[误] OK,I\'ll tell you, on condition that you keep it as a bottle.
[正] OK,I\'ll tell you, on condition that you be as dumb as an oyster.
注：牡蛎是一种类似于蚌的水生有壳动物。秘密在一个嘴巴闭得像牡蛎一样紧的人那里是再安全不过了。英国是一个岛国，牡蛎在那里十分常见，所以才有这样的比喻。
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