balance is of ultimate importance, so while trying to achieve this (especially when breathing) also try to get your hips up behind you.
所以在练习夹肩时(特别是在呼吸过程中)也要努力保持髋部不沉。
as she drives to the ball, she drives her back hips up which is good, she has good racket placement: down and away form the back. so she has good racket bent position.
当她向上击球时,她后臀部向上的动作很漂亮,而且她球拍的位置也不错:在身后向下向外,形成良好的搔背动作。
in order to keep your hips up with both arms recovering at the same time, you'll need to lean back into the water on your upper back, and make sure you have a constant kick.
为了让你在双臂同时移臂时保持臀部高位,你需要把上半身向后倾斜,还有要保持稳定的打腿。