VOA慢速英语:Girls on Wheels: Bicycle Programs in India and Kenya

短语讲解：

1. So, a number of parents keep their children at home.

a number of 一些; 许多的
例句：Two significant constants have been found in a number of research studies.
若干研究已经发现了两个重要常量。

2. The programs are giving girls “pedal power” -- transportation in the form of bicycles.

in the form of 用…的形式
例句：They received a benefit in the form of a tax reduction
他们获得了减税优惠。

3. In many cases, those household duties include taking care of younger brothers and sisters.

take care of 照顾
例句：Don't worry yourself about me, I can take care of myself
你别担心我，我能照顾好自己。

4. He belongs to a bicycle supervisory committee at the school.

belong to 属于
例句：I belong to no party.
我不属于任何派别。

5. He says that some families will put heavy things on the bicycles and then they break down.

break down 失败; 划分（以便分析）
例句：Their car broke down.
他们的车子出故障了。