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当一个伟大的游泳运动员正快速在水中游进的时候，他们似乎非常平滑有力。
When a great swimmer is moving quickly through the water they seem smooth and powerful.
youdao
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当一个伟大的游泳运动员正快速在水中游进的时候，他们似乎非常平滑有力。
When a great swimmer is moving quickly through the water they seem smooth and powerful.
youdao