An underwater weighing tank in the exercise physiology department at a local university is another option (some gyms occasionally offer measurements taken in portable tanks).
当地大学生理学系的水下称量桶是另一种方法(有些体育馆偶尔也会提供便携式罐体)。
During the extra kick, maintain a tightly streamlined body line just below the surface - feeling much as you did when doing the Underwater Kicking exercise above.
第二次蹬腿时，使身体在水面下保持一种紧张的流线型——做以上水下蹬腿练习时，努力体会你的动作。
During the extra kick, maintain a tightly streamlined body line just below the surface - feeling much as you did when doing the Underwater Kicking exercise above.
第二次蹬腿时，使身体在水面下保持一种紧张的流线型——做以上水下蹬腿练习时，努力体会你的动作。
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