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Then that foot stops and the other one accelerates. And so on. Thinner, lighter things are easier to accelerate than heavy, massive ones. So if you want speed, put the muscles up high and the skinny down low. Speed If you really want speed, you could go even further and pare down the foot, to decrease lower leg mass even more. A few million years of evolution and you’ll wind up with…you guessed it. A hoof.
然后，一只腳停下來，另一只腳加速。依此類推。更細、更輕的東西比重的、體積大的東西加速快。所以如果你想要速度，上半身肌肉要多些，而下半身要瘦些。想要速度時就加速，你可以走得更遠。縮減腳的尺寸，減少小腿的重量。幾百萬年的進化后，你會停止……你猜對了。進化成一個蹄。
accelerate v.使加速; 加快 massive adj. 大而重的 pare down 削減, 減少 lower leg 小腿 wind up 停止
