beat one's brains out

　　Definition: try very hard to understand or do something.

　　[世博精解]

　　这个惯用语在中文里有一个很对应的翻译:绞尽脑汁.当然绞尽脑汁并不是就这一种说法,我们也可以说cudgel one's brains for或者rack one's brains,但是beat one's brains out更加口语化一点。另外，要注意brain在这里用的是复数: brains,解释为智力、脑髓。

　　Example: "Can you help me with this problem? I've been beating my brains out with it,but I just can't solve it."

　　例句:“你能帮我解决这个问题吗?”“我一直在绞尽脑汁的想着这个问题,但就是不知该如何解决.”