潜水强者

Some People Can Dive Deep

普通人能够在水下停留的时间非常有限,但来自亚洲的巴瑶族人具有强大的潜水能力。他们可以一口气潜到60米深,在水下保持13分钟.能够做到这一点,是因为巴瑶族人的脾脏体积异于常人。脾脏为人体器官,能够储存血液。巴瑶族为海上游牧民族,日常以潜海捕鱼为生。研究人员发现,他们的脾脏体积比一般人大一半(见图)。脾脏越大,储血量则越大,在人憋气时可以为身体提供氧气。

Most people can only stay underwater for a very short time.But the Bajau(巴瑶族)people from Asia can stay under much longer.They can hold their breath5 for thirteen minutes and dive6 as deep as 60 meters!One reason they can do this is the size of their spleen(脾脏).The spleen is a part of the body that holds7 blood.