所以人們要保護益蟲消滅害蟲， which will make contributions to people. people don t like harmful animals， so people should protect beneficial insects and eliminate pests.我還喜歡蜻蜓，some beneficial animals can help people to protect crops，它真是人類的好幫手，使人們減少疾病發生， 人們都喜歡有益的動物，