在正文部分写友好的信息。

Write a friendly message in the body.

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污染有害于人类。在正文部分分析了污染会给人类造成哪些具体的危害。最后在结尾部分提出了防治污染的措施。

Measures should be taken to control pollution. Legislative steps should be introduced and pollutants should be trapped before they are poured out of chimneys.

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本文在正文部分提供了一些重要调用的代码片段，并在文件wsrr_examples . zip中提供了完整的源代码，您可以在本文末尾处下载该文件。

The article provides code snippets of the important calls in the body of the article, and complete source code in the file wsrr_examples.zip, which you can download at the bottom of the article.

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