The difference between swimmers is how the arm stroke is used to produce thrust.

不同的游泳运动员之间的区别很大一部分就是如何使用手臂的划水来产生前推力。

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Thrust: to extend the arm and sword toward the opponent.

刺：把臂和剑伸向对方。

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Thrust: to extend the arm and sword toward the opponent.

刺：把臂和剑伸向对方。

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