These parasites spend the entire winter attached to the skin of the moose.

这些寄生虫整个冬天都附着在驼鹿的皮肤上。

At this time of the year, the walrus are molting ridding themselves of dry and parasite-bitten skin.

每年的这个时候，海象们蜕皮换掉干燥而被寄生虫叮咬的皮肤。

In some cases, crack or cocaine abuse can lead to something called Delusional Parasitosis-the feeling that bugs or insects are crawling under the skin.

在某些情况下，快克或可因滥用会导致一种叫做妄想性寄生虫病，会感觉虫子或昆虫在皮肤下爬行。

Since the Celts, the commoners washed  with soap, and medieval citizens knew that washing would help deter parasites and clear  up skin infections.

自凯尔特人以来，平民用肥皂清洗，中世纪的公民知道清洗有助寄生虫和清皮肤感染。

One extreme example is a psychological condition called delusory parasitosis where people believe their bodies are infested with mites or fleas scurrying over and under their skin, making them itch incessantly.

一个极端的例子是一种叫做妄想性寄生虫病的心理状况，人们认为他们的身体被螨虫或跳蚤滋生，在他们的皮肤上下窜动，使他们不停地发痒。