体虱

In 2003, Mark Stoneking, a geneticist at the Max Planck Institute in Leipzig, Germany, estimated from DNA differences that the body louse evolved from the head louse about 107,000 years ago.

2003年，普朗克学院的基因学家斯通金估算体虱大概在十万七千年前于头虱分叉。

The head louse, Pediculus humanus, lives in the forest of fine hairs on the scalp.

头虱生在人的头发之中，其近亲体虱居于衣服，而不是身体。

In rare cases, body lice may carry uncommon diseases such as relapsing fever or trench fever.

在个别情况下，体虱可能传播一些少见的疾病例如回归热或者五日热。

Just as three sorts of body lice, specialised to be able to grasp different sorts of hair, live on humans, so water lice are host to two sorts of bdelloid.

就像寄生在人身上的三种体虱一样--它们是以抓住不同毛发的能力来分的--两种蛭形生物同样寄生在水虱身上。

Pediculus humanus var. corporis.

图1：体虱的显微照片。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。