For example, compared to Western countries, women in developing countries start having children at an earlier age.

VOA: special.2010.08.11

Before we start on the trip, I want the children to know where in the world they are and where they've come from.

在我们开始旅行前，我希望孩子们知道,他们在世界的那个位置,他们来自哪里。

麻省理工公开课 - 媒体、教育、市场课程节选

A high burden of infectious diseases. Lack of provision of family planning allowing a women to decide when to start and end having children and how to space her children.

VOA: special.2009.10.19