研究表明，跑相同的路程，肯尼亚人比其他人群节省能量。 这要归功于他们的长腿和大肺活量。
Studies have shown that Kenyans' use less energy to run the same distance as other populations, due to their long legs and large lung capacity.
安德烈·芬克尔斯坦教授认为外星人可能和人类长的非常相像，两只胳膊、两条腿和一个脑袋。
He said the aliens would most likely resemble humans with two arms, two legs and a head.
看我的机器人。它有一个大头。它有长的手臂。它有短的腿。
Look at my robot. It has a big head. It has long arms. It has short legs.
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