They enable backstrokers to execute a backstroke turn more efficiently by counting their strokes 它们可以使仰泳运动员在比赛做仰泳转身时更有效地计算他们的动作。
Backstroke flags placed five yards ( short course ) or 5 meters ( long course ) from the end of the pool 仰泳标志旗放置在从泳池的端头算起5码（段池）或5米（长池）处。
Additionally it is possible to see a world record in the 100 - meter backstroke ( the first leg ) in this race 另外，在这种比赛中可能产生100米仰泳（第一棒）的世界记录。
This kind of exaggeration or over - teaching is common in swimming - - especially in backstroke 这种（通过小动作）夸大感觉的练习在游泳训练中被广泛使用，尤其是仰泳训练中。
If you ' ve ever worked with someone ( or had a coach work with you ) on backstroke hand entry , you know what i ' m talking about 如果你曾经作过仰泳移臂入水的训练，你可能会体会到这一点。
1 main connection 2 dose pump 3 tank 30 litres 4 backstroke valve 5 plastic tubes 6 t - branch kit 1主接驳线2喷洒泵3可盛30公升水的容器4反击真空管5胶管plastic tubes 6 t -型支管工具箱
Yes , and all the different swimming styles ? backstroke , butterfly and soon . i love the relay races ? they ’ re the most exciting （是的，各种泳姿? ?仰泳、蝶泳等等。我喜欢接力比赛? ?这是最激烈的。 ）
Champion swimmers do not illustrate swimming in an exaggerated long , thin , on the side position in either crawl or backstroke 游泳冠军们不会在爬泳和仰泳的一侧位置时使用夸张的长的，细的身体姿势。
Most swimmers think their backstroke hand entry is at 10 / 2 or 11 / 1 , when in fact they are over - reaching 很多游泳选手认为自己在仰泳时移臂入水点在10点/ 2点或是11点/ 1点的位置上，其实可能并不是这样。
Holding the body on the side produces no more or no less drag resistance than holding it prone in crawl or backstroke 保持身体在一侧的姿势产生的拖曳阻力相对保持身体水平的姿势来说是一样的，不多也不少。
