Contagious: a human head louse clings to a strand of hair.
感染力：附着在一根头发上的人类头虱。
The human head louse, for instance, evolved from the chimpanzee louse when the ancestors of humans and chimps split apart some five million years ago.
例如，人头虱是500万年前当人类祖先与黑猩猩分化时从黑猩猩身上的虱子进化来的。
Given the ancient root of the louse family tree, it is likely that the first louse infested the feathered dinosaurs that were the birds' ancestors, he concludes.
考虑到虱子系统树的悠久历史，很可能虱子先传播到是鸟类祖先的有羽毛恐龙身上了。
A black plant louse that lives on oaks and dogwoods.
寄居在橡树和椋木上的黑色木虱。
A louse and a flea kept house together and were brewing beer in an egg-shell.
一只虱子和一只跳蚤住在一起，它们还一同在蛋壳里酿酒。
When we apply 'Mie Jie Ling' at 1 age nymphal stage, 2 age nymphal initial stage of scale louse, its results will improve greatly.
掌握在蚧虫1龄若虫、2龄若虫初喷药，可大大提高“灭蚧灵”的杀虫效果。
This burrowing plant louse devastated European vineyards between1860and1880and its descendants are now ravaging Californian grape vines.
这种虫害在1860年到1880年间毁灭了欧洲葡萄园，而它们的后代现在也给加州的葡萄秧造成损害。
The head louse, Pediculus humanus capitis is a tiny insect which lives on the hair. Occasionally, it is also seen in the eyebrows or beard.
头虱是一种寄生于头发上的细小昆虫，有时亦会在眼眉或胡须间出现。
The adaptation is so precise that when a louse 's host species evolves into a new one, the louse will diversify into different species, too.
这种适应特征非常精准，如果虱子的宿主物种进化成为一种新的物种，虱子也会进化成不同的物种。
One of the more embarrassing mysteries of human evolution is that people are host to no fewer than three kinds of louse while most species have just one.
人类进化的一个最令人不堪的秘密就是人身上至少长着三种虱子，而大多其他物种只长着一种。
They compared the degree of louse infestation with how central each female was in the social network, meaning how many other monkeys were her social contacts.
他们比较了虱子的滋生程度与每只母猕猴在交际网中的位置，也就是说，她和多少只猴子有社会交往。
Large Marine arthropod of the American Atlantic coast having a domed horseshoe-shaped carapace and stiff pointed tail; a living fossil related to the wood louse.
美洲大西洋海岸的大型海生节肢动物，有半球形马蹄状甲壳和硬而尖的尾巴；与林虱有关的一个活化石。
In this study, she and her colleagues estimated the degree of louse infestation by the number of nits picked. The more nits, they calculated, the more lice-producing nits.
在这项研究中，她和同事们根据抓到的虱卵数量估算虱子滋生的程度。他们认为，虱卵越多，说明产卵的虱子越多。
So biologists have long been puzzled over the fact that the human head louse is a sister species to the chimpanzee louse, but the pubic louse is closely related to the gorilla louse.
所以生物学家长期为此困惑：为什么人类的头虱是黑猩猩虱子的近亲。而阴虱却是大猩猩虱子的近亲。
Hormonal changes in the blood of the macaques that the lice feed on could affect louse reproduction and cause a jump in lice in winter and summer, which would make grooming more important.
虱子吸食的猕猴血液中的激素变化可能会影响虱子的繁殖，导致冬夏两季虱子数量暴增，那会让梳毛显得更为重要。
Hormonal changes in the blood of the macaques that the lice feed on could affect louse reproduction and cause a jump in lice in winter and summer, which would make grooming more important.
虱子吸食的猕猴血液中的激素变化可能会影响虱子的繁殖，导致冬夏两季虱子数量暴增，那会让梳毛显得更为重要。
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