当运动员在水中快速游动时，它可以减小形阻力。
It reduces form drag while the athlete is swimming quickly through the water.
巨齿鲨在短时间内爆发力强，快速游动，从猎物下方攻击。
Megalodon could swim at high speed in short bursts so tended to rush its prey from beneath.
有时我觉得自己是个野男孩，或者是一个海狸在水中快速游动。
Sometimes I felt like I was a wild boy, or a beaver sliding through the water.
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