有些游泳运动员自由泳做6次打腿(一个完整的自由泳划手周期内作6次打腿)，但有些运动员则作两次或者四次。

Some swimmers kick with a six-beat kick in freestyle (six kicks for each stroke cycle), while others use a two-beat kick or a four-beat kick.

youdao

有些游泳运动员自由泳做6次打腿(一个完整的自由泳划手周期内作6次打腿)，但有些运动员则作两次或者四次。

Some swimmers kick with a six-beat kick in freestyle (six kicks for each stroke cycle), while others use a two-beat kick or a four-beat kick.

youdao