To stabilize its population—discounting immigration—women must have an average of two children.

为了稳定人口——减轻移民的影响——妇女必须平均生育两个孩子。

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During that period the world's population was growing by an average of 1.8% a year.

在此期间，世界人口增长了每年1.8%。

youdao

During that period the world's population was growing by an average of 1.8% a year.

在此期间，世界人口增长了每年1.8%。

youdao