Lesson 141 Global Warming
第141课　全球气温上升
Have you noticed that it's getting warmer and warmer every year?
你有没有注意到天气一年比一年变得还要暖和了呢？
To put it simply that's because of air pollution.
简言之，那是因为空气污染的缘故。
Scientists tell us that because of air pollution, the earth's heat cannot escape.
科学家告诉我们由于空气污染，地球的热气无法散出去。
This is known as global warming.
这就是为人所知的全球变暖。
If this situation is allowed to continue, it will just keep getting hotter an hotter.
如果我们任由这种情形一直持续下去，地球就会变得越来越热。
Then, can you imagine what will happen?
那么，你能想像会发生什么事吗？
We should all, therefore, do our part to stop polluting the air and help save the world.
因此，我们全都应该尽一己之力来防止污染空气并拯救地球。