Among men (who already have a heightened risk of chronic respiratory disease due to their higher rates of smoking), exposure to indoor smoke nearly doubles that risk.

在男性中(他们因吸烟率较高已经具有罹患慢性呼吸系统疾病的更高风险)，接触室内烟雾几乎可使面临的这种风险翻倍。

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For example the leading women win a bigger proportion of their prize money because unlike the men they play the doubles as well.

比如顶级女子单打选手获得的奖金份额会更大，因为和男子选手不同的是，她们同时还参加双打比赛。

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Among men, exposure to this neglected risk factor nearly doubles the risk of chronic respiratory disease.

在男子中，暴露于这一被忽视的危险因素使患慢性呼吸道疾病的危险几乎增加1倍。

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Murray's older brother Jamie was knocked out in the first round of the men's doubles in Miami on Sunday.

BBC: SPORT | Tennis | Effortless Murray beats Kendrick

The Bryan brothers had taken the bronze medal in the men's doubles in Beijing four years ago, but made no mistake this time.

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The new pairing's first event will be the Denmark Open from 21 October, when Robertson will also team up with Anthony Clark in men's doubles.

BBC: Robertson pairs up with Wallwork