Drop the needles on the paper and calculate the percentage that fall on a line. With enough attempts, the answer should be the needle length divided by the width between lines, all multiplied by 2/pi.

将针随便丢在纸上，然后计算出落在线上的针的百分比，随着尝试次数的足够多，最终这个百分比将越来越逼近针的长度除以格子的宽度再乘以2/pi。

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Sales, down 40% during the recession, have recovered more than half that drop, in line with the recovery in car production.

汽车销售量在萧条时期下跌了40%，现在由于汽车生产量的提高，销售量也已恢复下跌量的一半以上。

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Yet Temasek's overall performance has been merely mediocre rather than abysmal-the 37% drop in dollar terms over eight months is exactly in line with the MSCI world share index.

然而淡马锡的整体表现不过尔尔，而不是非常糟透的——在过去八个月中，以美元计算的37%的降幅完全符合摩根·士丹利世界指数。

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He defended the decision to drop front-line spinner Sulieman Benn in marked contrast to England's thinking.

BBC: Strauss confident of Trinidad win

Italy were not going to lie down and forced a goal-line drop-out.

BBC: Gareth Thomas scores on Wales debut in loss to Italy

Sam Burgess set up Newton for the opening try but Huddersfield replied by piling on the pressure, three times forcing Michael Platt into conceding goal-line drop-outs.

BBC: Bradford 38-12 Huddersfield