美国经济11月份减少了1万1千多份工作，工作减少幅度远低于10月。
The U.S. economy also lost 11, 000 jobs in November, which is far less than the prior month.
美国人平均每年接触的细微颗粒物减少了约27%，欧洲的减少幅度较小。
The United States has experienced a reduction of about 27 percent in the average annual exposure to fine particulate matter, with smaller declines in Europe.
大规模的水土保持措施实施以后，细泥沙入海通量的减少幅度要大于粗泥沙。
After the measures were taken of soil and water conservation, the decrease of the sediment flux into the sea in fine grain-size fractions was more than that in coarse fractions.
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