自20世纪90年代以来，人口专家预测人口数量将增长到90亿，然后增长放慢，甚至可能减少。

Since the 1990s, population experts have predicted the number would grow to nine billion before it begins to slow down and possibly decrease.

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首先，学生的数量是不可预测的。

First, the number of students would be unpredictable.

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在数值幅度估计中发现的那些维度的指数可预测在数量级产生中发现的指数。

The exponents of those dimensions found in numerical magnitude estimation predict the exponents found in magnitude production.

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