肚脐位置决定你能否成为"飞人" -新概念英语

　　The reason why black people make better sprinters and white people dominate swimming races has been explained by scientists - it's down to their belly buttons.

　　为什么黑人擅长短跑而白人是游泳比赛的常胜将军?科学家给出了新解释，这是由肚脐的位置决定的。

　　The researchers found that the position of the navel in relation to the rest of their body affects athletic ability. This is because the naval is the body's centre of gravity. A higher naval meaning a higher centre of gravity, so your body is pulled forward faster. While a lower navel means a longer torso which makes for a better swimmer.

　　研究人员发现肚脐在人体的相对位置能够影响到人的运动能力。因为它是人体的重心所在。肚脐位置高，重心就高，因此向前冲的速度快。反之，肚脐位置低，躯干长，游泳就快。