The video entries include a lively rap song on indoor air pollution and safety in the house, and show the impact of waste, poverty and the stigma of mental and physical disability.
录像作品包括关于室内空气污染和室内安全的一首欢快的快板歌，并显示了垃圾、贫穷以及身心残疾所引起歧视的影响。
On the negative side, automobiles are the main source of air pollution in the world which creates the so-called green-house effect.
而消极的一面是，汽车是世界上污染的主要来源，产生了所谓的温室效应。
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