Usually the insect eaters are helpful to man, because they do away with harmful insects such as mosquitoes.
吃昆虫的动物通常都有益于人类，因为它们消灭诸如蚊虫之类的害虫。
The cage-typed electric-net insect killer can be used all day long, which can widely trap and kill the crops harmful insects.
这种笼式电网灭虫器能够全天候使用，更为广泛地引诱触杀农作物有害昆虫。
The monitor insect mouth density may know the harmful insect type which and the insect mouth density in the greenhouse exists.
监测虫口密度可以知晓温室中存在的害虫种类及其虫口密度。
Wood packaging fumigation is to prevent harmful insect and damage taken by importing countries forest resources of a kind of compulsory measures.
木质包装熏蒸就是为了防止有害病虫危害进口国森林资源所采取的一种强制措施。
Most roaches prefer a more conventional insect life outdoors, where they help to recycle decaying vegetation, pollinate plants, and in some cases even prey on more harmful insects.
大部分蟑螂喜欢更为传统的户外昆虫生活，它们可以帮助回收腐烂植被，帮植物授粉，甚至在一些情况下还会捕食害虫。
According to observation on harmful characteristics of main forest insect pest, control measures have been put forward.
并对主要林木害虫的危害特点进行了观察，提出了防治策略。
I found out that the skin of almonds contains harmful acids used to protect it, naturally, from insect attack and fungus.
我发现了杏仁皮肤包含用于保护它，自然由昆虫和真菌的攻击，有害的酸。
A form of protective mimicry in which an unprotected species, especially of an insect, closely resembles an unpalatable or harmful species and therefore is similarly avoided by predators.
昆虫界中多见一种保护性模拟成另一种没有保护的物种，因其模拟一种难吃又具伤害性的物种，可以躲避天敌。
A form of protective mimicry in which an unprotected species, especially of an insect, closely resembles an unpalatable or harmful species and therefore is similarly avoided by predators.
昆虫界中多见一种保护性模拟成另一种没有保护的物种，因其模拟一种难吃又具伤害性的物种，可以躲避天敌。
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