VOA慢速英语:Seoul Demonstrates Environmental Investments at Climate Change Conference

短语讲解：

1. The mayor of Seoul told VOA that “green technology’ investments are paying off for his city.

pay off 付清
例句：You'll have to pay off your old loan before being allowed a new one.
你必须还清旧债，才能重新贷款。

2. He also said he is working with nearby cities to prevent toxic dust from blowing in across the border.

prevent from 阻止
例句：We must take steps to prevent this from happening again.
我们一定要采取措施，使这样的事不再发生。

3. Seoul's Mayor, Park Won-soon, says investments in technology are good for the environment, the economy and the 10 million people living in the city.

be good for 有利于
例句：Do it up. It'll be good for you.
把它喝完，它对你有益。

4. Seoul’s mayor says he reached out to 13 cities in China and Mongolia to help them fight pollution and other environmental problems.

reach out 伸出
例句：We must reach out to those in need.
我们应该伸出援助之手, 帮助有困难的人。