滥伐森林主要是由于砍伐热带森林提供农业用地。
Deforestation is mainly caused by the cutting down of tropical forests to provide land for agriculture.
为了提供农业用地,这些河流被排干水。
劳工统计局有用地提供了“平滑的”数据,调整了估计过程中的变化。
The BLS helpfully provides "smoothed" data that adjusts for the change in the estimation procedure.
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