说起地球上最能跑的生物,你可能首先想到的是速度最快的猎豹。在百米赛跑中,飞人博尔特也跑不过一只猎豹。但在马拉松比赛中,就要另当别论了。事实上,论跑步耐力,人类远胜过狼、猎豹甚至是马。
Each year, a small town in Wales holds the Man Versus Horse Marathon. It's a 22-mile race between riders on horseback and runners. And, while horses often win, humans will sometimes prevail.
威尔士的一个小镇每年都会举办“人马长跑大赛”,由骑马者和跑步者共同参与,赛程约为35公里。虽然骑马者常常胜出,但人类有时也能获胜。
So what makes humans such endurance running superstars?
那么,人类为什么能成为长跑健将呢?
The secret weapon is our sweat. We have 2-4 million sweat glands all over our body, which means we can run and cool ourselves at the same time. Having no fur is also a huge plus.
我们的秘密武器是汗液。人类全身覆盖着200万至400万个汗腺——也就是说,我们能够一边跑步一边降温。另外,没有皮毛也是一大优势。
In contrast, dogs rely on panting to cool down, and other animals, like horses and camels, also sweat, but less effectively. As a result, they overheat faster and must slow down sooner.
相较而言,狗要靠喘气降温;马、骆驼等其他动物虽然也流汗,但降温效果不如人类。因此,它们的体温会更快过热,需要尽早减速。
【人类为什么能成为地球上最厉害的长跑健将?】相关文章:
★ 瓦尔都窗前的一瞥
最新
2020-09-15
2020-09-15
2020-09-15
2020-09-15
2020-09-15
2020-09-15