Beat One's Brain Out——絞盡腦汁

** work energetically（起勁地工作）// work desperately（拼命工作）// to drive oneself hard to accomplish something（努力推動自己去完成某件事）

~~ 傷透腦筋；煞費苦心；費盡心機；挖空心思；費盡心思去思考；冥思苦想；冥思苦索

~~ rack（折磨）one’s brains（絞盡腦汁）// cudgel （用棍棒打）one’s brains（焦心苦慮）// blow someone's brain out // put thinking cap on // mull over （仔細考慮）

!! There are two meanings, though the first one has mostly taken over the other:

（有兩個含義，但是第一個大部分涵蓋了另外一個含義：）

1. make a strenuous mental effort to understand or remember something, or solve a difficult problem, often with a sense of having failed.

（一、努力地理解或記住某些事情，或者解決一個難題，往往有失敗感。）

2. to beat someone severely.

（二、嚴厲擊打別人）

>> Our CEO has beaten his brain out to turn a four-consecutive-year money-losing company into a profitable one.

（我們的首席執行官已盡心竭力，將連續四年虧損的公司轉虧為盈。）

>> The teams of the two presidential candidates have racked their brains for strategies to win.

（兩個總統候選人的團隊絞盡腦汁想辦法獲勝。）

學勤進修教育中心英語專科導師 李啟文　　教授