The United Nations estimates that females age ten to twenty-four are one-eighth of the world's population.

VOA: special.2010.06.24

If you would think about education from the explicate point of view, and we think about the school age of youngsters' population, there is no doubt that content is very, very important.

如果从表面,探究教育，我们会想到,青少年的学龄，毫无疑问,教育的内容也极其重要。

麻省理工公开课 - 媒体、教育、市场课程节选

If you would think about education from the explicate point of view, and we think about the school age of youngsters' population, there is no doubt that content is very, very important.

如果从表面,探究教育，我们会想到,青少年的学龄，毫无疑问,教育的内容也极其重要。

麻省理工公开课 - 媒体、教育、市场课程节选