Real incomes were a function of things like growth of the labor force and productivity per work hour.

真正的收入是劳动力增长和每工时生产力的函数。

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Carbon monoxide is eliminated within days of giving up and lung function can improve by 10 per cent within three to six months.

放弃吸烟几天之内，就能清除一氧化碳，三到六个月内，肺部功能会改善10%。

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The trick in making the XPath function so concise is the fact it has so little need to worry about XML per se (see Listing 4).

XPath函数如此简洁的诀窍在于根本无需担心XML(请参阅清单4)。

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In 2001, military spending, as a function of the over-all American economy, was, at six per cent, the lowest it had been since the Second World War.

NEWYORKER: The Force