其分子数目如此之大，以至于在其立方体积内，空气所受的平均作用确实是不变的。
This number of molecules is so large that the average effects within the micro volume are indeed virtually constant.
至少在18个月至一年的实验中尚未发现小额贷款对家庭平均消费的作用。
There was no effect on average household consumption, at least within a year to 18 months of the experiment.
研究人员估计，西南极洲冰川的加速流动在已观测到全球平均海平面上升中所起的作用约占10％。
Researchers estimate that the accelerating flow of glaciers in West Antarctica is contributing about 10% of the observed rise in the mean global sea level.
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