body hair

基本解释

The findings reveal that our ancestors started to wear clothing long after they lost their ape-like body hair.
这个发现揭示了我们的祖先是在脱去他们类人猿的体毛很久以后才穿上的衣服。
The results to date suggest that the only acute effects are associated with body hair movement and discomfort from spark discharges.
迄今为止的研究成果表明，只存在着与身体毛发运动和因电火花引起的不适有关的即刻影响。
Being the only guy whose voice is changing or who's growing body hair (or the only guy who isn't) can also make some guys feel self-conscious for a while.
对有些男孩来说，如果只有他在变声或者体毛在增加（或者只有他没有变声或者体毛没增加），他会着实不自在一阵子的。

Their conclusion is that humans have fine body hair to serve as an alarm system.
ECONOMIST: Body hair
It works by using a power source to pump 10 kV of juice to an electrode, which then polarizes a dielectric plate, causing it to attract your body hair.
ENGADGET: Chilly Chair uses static electricity to raise your arm hair, force an 'emotional reaction' (hands-on video)
The upshot is that, whatever the reason why human body hair has shrunk, one reason it has not disappeared completely is because it warns and protects those who sport it from the attentions of hostile insects.
ECONOMIST: Body hair