The Institute spends a lot of time scratching its head about how to boost American productivity.

这家研究所花大量时间绞尽脑汁思考怎样推进美国的生产力。

《柯林斯英汉双解大词典》

The claim that removing the legal cloud over foreclosure would help the housing market - in particular, that it would help support housing prices - leaves me scratching my head.

宣称驱散取消抵押品赎回权行为上空的法律乌云有助于房地产市场——尤其会支持房子的价格——的说法让我挠头不解。

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We've all had a few head-scratching moments with generics, but far and away the trickiest part of generics is wildcards.

对于泛型我们都经历过一些痛苦的回忆，但毫无疑问通配符是最棘手的部分。

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It won't be a seen as an essential upgrade - you may remember the head-scratching about what the iPad was for when it launched in April 2010 - but it will both exploit and further engender the loyalty of Apple's army of fans.

BBC: Apple: Experts' views on tech firm's next big product

But after the count resumed with the arrival in Nairobi of manual tallies, the number of rejected ballots were greatly reduced, and the election commission on Thursday gave the head-scratching explanation that the computer was mistakenly multiplying the number of rejected ballots by a factor of eight.

NPR: Kenya Final Vote Total: Kenyatta Has 50.03 Pct

Through the squabbling about bananas and the head-scratching about Kosovo, the shape of a 21st-century alliance of the democracies at last begins to emerge.

ECONOMIST: When the snarling��s over