随着刷磨次数的增加，织物表面的起球数先增加，在到达一个峰值后又逐渐减少；

With the increase of brush times, the pilling numbers increases firstly, then reduce gradually after reaching a peak value.

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赛季前，我们会要求投手们每天投出指定数量的球数，球数随着赛季临近逐渐增加。

In preseason we require our pitchers to throw a specified number of pitches each day.

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水稻稻曲病随着每穗稻曲球数增加，穗粒数、粒重及千粒重下降，秕谷率上升，产量损失率增加。

The grains and grain weight decreased and the blasted rate and yield loss rate of rice increased with the increase of disease grains each ear.

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So, we have the probability here.

除了用背散射球数。

麻省理工公开课 - 化学原理课程节选

And there are only two ways to move the ball in football and to gain yards.

而且在美式足球比赛中，只有两种方式去推进球来获得码数。

美式足球 - SpeakingMax英语口语达人