===图片参考===
1.https://en.wikipedia.org/wiki/Telomerase#/media/File:Telomerase_illustration.jpg
2.https://commons.wikimedia.org/wiki/Category:Pesticide_application#/media/File:%EC%9E%90%EB%8F%99%EB%B6%84%EB%AC%B4%EA%B8%B0%EB%A5%BC_%EC%9D%B4%EC%9A%A9%ED%95%9C_%EB%86%8D%EC%95%BD_%EC%82%B4%ED%8F%AC.jpg
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