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一只杜鹃,一天能吃松毛虫150多条,一年可吃掉松毛虫5万条左右。 一只灰喜鹊,一年可吃掉松毛虫15000条,可使2亩森林不受危害。
A rhododendron can eat more than 150 deer caterpillars a day and can eat about 50,000 dendrolians a year. A gray magpie, a year can eat pine deer 15000, 2 acres of forests can be harmed.