I can't work it out in my head —I need a calculator.

我没法心算出来—我得用计算器。

《牛津词典》

You will more than likely have everything sorted out in your head after resting up, and before you know it, your work will be all done!

在休息之后，你脑中就能够更好的将工作分类，甚至可能在自己意识到之前，就能够很好的完成这些工作了。

youdao

Sometimes we were called upon to work alongside Abnesti in the head of the spider.

有时候，我们会被召进这个蜘蛛的脑袋里，跟艾博一起工作。

youdao

During a media conference in Tehran over the weekend, the head of Iranian state TV Ezzetollah Darghami said Iran must "work to combat Western propaganda."

VOA: standard.2009.11.16

Even if U.S.economic output expands in 2010 and more Americans head back to work, both critics and supporters of the president say the nation faces a more serious challenge to future economic viability: a rapidly growing deficit and a national debt estimated at more than $12 trillion.

VOA: standard.2010.01.15

Britain and the rest of the world have discovered that burying your head in the sand does not work, and now each of them, is having to pay a heavy price for ostrich policy.

ECONOMIST: Was war warranted?

T-Mobile has 6, 500 staff in Britain, about 2, 000 of whom work at its Borehamwood head office in Hertfordshire.

BBC: Mobile phone giant denies pension risk

When she died apparently by shooting herself in the head, on a rural road in California she had started work on a book on the Bataan Death March and the abuse of American prisoners-of-war by the Japanese.

ECONOMIST: Obituary