这种身长只有10厘米小型爬行动物，可以在沙子中以最快每秒15厘米的速度游动。
This small reptile, which measures just 10 centimeters long, can swim through the sand dunes at up to 15 centimeters per second.
布赖德鲸瞬间爆发的最高速度可达到每小时18英里，身长可以长到50英尺长、体重达22吨，只比它们的亲戚蓝鲸小了一点。
Built for bursts of speed that may top 18 miles an hour, Bryde's whales can grow 50 feet long and weigh 22 tons-smallish only compared with their colossal blue whale kin.
看似缓慢，实际上却相当快，每秒以超过两个身长的速度移动。
Though it looks slow, it is actually quite fast, reaching a speed of over two body lengths per second.
看似缓慢，实际上却相当快，每秒以超过两个身长的速度移动。
Though it looks slow, it is actually quite fast, reaching a speed of over two body lengths per second.
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