介紹:

Blue in the face
釋義
Do something till you are blue in the face.
徒勞做某事，最終沒有結果

舉例
You can walk around till you are blue in the face, but you won&`&t find a shop selling shoes as cheap as these!
你可以到處走走看看，但最后你絕對找不到一家店，賣鞋的價格和我們一樣實惠。
Mom told Alex to do his homework until she is blue in the face, but Alex didn&`&t do it.
媽媽磨破嘴皮叫Alex去做作業，但最后Alex還是沒有做。

once in a blue moon
很少，幾乎不
A: "Do you ever eat pork?”
A: 你吃過豬肉沒？
B: “Once in a blue moon; I prefer beef.”
B: 很少，幾乎不吃。我更喜歡牛肉。

out of the blue=suddenly
突然地
He divorced out of the blue.
她突然就離婚了。

blue 淫穢的，下流的
a blue joke下流的笑話
a blue movie/film 色情電影