这一因素一定出现在冰川期之前，并有稍微降低地球温度的效果。

This factor must precede an ice age and have the effect of slightly lowering Earth's temperature.

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但如果你食用种类丰富的蔬果，可能患癌风险能稍微降低。

But if you boost the variety of fruits and vegetables that you eat, you may be able to lower those odds a bit.

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去年微软为保住成本削减约5%的劳动力，稍微降低了7.1日的财政年度营业费。

The company, which cut about 5 percent of its work force last year to keep a lid on costs, slightly lowered its operating expense target for the current fiscal year, which started on July 1.

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