人口数

xiàn zài rén kǒu shù bǐ guò qù dà fú zēng zhǎng

现在人口数比过去大幅增长。

The population is much larger now than it used to be.

huán bǎo rén shì chēng zào chéng gāi shì wū rǎn wèn tí de yī gè guān jiàn yīn sù shì qí rén kǒu shù

环保人士称造成该市污染问题的一个关键因素是其人口数。

Environmentalists say a critical factor in the city's pollution is its population.