中式英语之鉴:守口如瓶

267. 好吧，我告诉你。但你必须守口如瓶。

[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。