beat his brains out 苦干
beat his brains
打他的脑袋
以上为机器翻译结果，长、整句建议使用 人工翻译 。
He beat his brains over the matter for days.
他为这个问题劳心焦思了好些天。
youdao
When he fell from the cliff, he beat his brains out.
他从悬崖上跌了下去，头破血流而死。
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