这一数量占该部门全部劳动力的三分之一。

That amounts to one third of the total work force in that sector.

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据各项估计，美国垃圾场中的废纸数量占所有垃圾的35-40%。

Various estimates place the quantity of waste paper tossed into U.S. dumps and landfills at 35-40 percent of total landfilled mass.

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中国农民数量占全世界的40%左右，而耕地面积仅占9%。

China has about 40 per cent of the world's farmers but just 9 per cent of the world's arable land.

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