求翻译：1962年美国生物学家蕾切尔·卡逊出版了一本书，名为《寂静的春天》，书中阐释了农药杀虫剂DDT对环境的污染和破坏作用，由于该书的警示，美国政府开始对剧毒杀虫剂进行调查，并于1970年成立了环境保护局，各州也相继通过禁止生产和使用剧毒杀虫剂的法律。由于此事，该书被认为是20世纪环境生态学的标志性起点。是什么意思？

1962, American biologist Rachel Carson published a book called "Silent Spring", the book explains the pesticides DDT on the role of environmental pollution and destruction, as the book's warnings, the United States government began an investigation of highly toxic pesticides, and in 1970 established

In 1962, the American biologist Rachel Robinson has published a book titled "The Silent Spring, in the book of pesticides on explaining the pollution of the environment in DDT pesticides and destructive role, as the Book of warning, the Government of the United States began an investigation to toxic

In 1962 the American biologist flower bud cut your · card to abdicate has published a book, named "Silent Spring", in the book has explained agricultural chemicals pesticide DDT to the environment pollution and the destructive effect, because this book police showed, American Government started to t

1962 United States biologist Rachel Carson published a book entitled Silent Spring, the book illustrates the insecticide DDT contamination and damage to the environment, since the book's warning, United States Government began to investigate the highly toxic pesticides, and the environmental protect

In 1962 United States biologist bud qieer·kaxun published a book entitled Silent Spring book illustrates the insecticide DDT pollution and damage effects on environment because the book warning, it United States Government begin a investigation to highly toxic insecticide, and formed EPA in 1970 and