中式英語之鑑:守口如瓶

267. 好吧，我告訴你。但你必須守口如瓶。

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[誤] 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：牡蠣是一種類似於蚌的水生有殼動物。祕密在一個嘴巴閉得像牡蠣一樣緊的人那裡是再安全不過了。英國是一個島國，牡蠣在那裡十分常見，所以才有這樣的比喻。