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昆虫家族种数占全部动物4/5,约100万种,队伍庞大,分布广泛,行动变幻多端。人们发现其中很多昆虫是直接有益的,但要统计出它们中间究竟有多少益虫,确实不易,随着人们对昆虫研究不断
Insect family species accounted for 4/5 of all animals, about 1000000 species, a huge team, widely distributed, action varied. Many of these insects are found to be directly beneficial, but it is hard to count how many beneficial insects are among them, and as people research insects