如果你堅持做某事直到 you are blue in the face, 意思就是你花很長時間做一件事情，做到臉都發(fā)青了也沒用，不會成功。
例句
Martin argued with his mother until he was blue in the face, but she still made him wash the dishes.
You can walk up and down the high street until you are blue in the face, but you won't find a shop selling leather shoes as cool or as cheap as these!
請注意
短語 'once in a blue moon' 的意思是千載難逢的，罕見的，難得的。
I only eat red meat once in a blue moon these days. You never know what's in your burgers, especially after the horsemeat scandal.
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