Balance-ball

常见例句

Posterior flye.Sit on a balance ball with your feet together and your back straight at a 45-degree angle to your thighs.
两脚并拢坐在健身球上，背部与大腿呈45度角。
He singled and went to second on a passed ball.
他击出一垒打，再因对方漏接而跑上二垒。
She performed on the balance beam with much grace.
她在平衡木上表演得非常优美。
In cricket, the ball is delivered overarm.
打板球时，要举臂过肩掷球。
Children love to ball snow up in their hands.
小孩子们喜欢将雪在手里做成球儿。
He lay back and hit the ball for four.
他向后弯身击中球，得了4分。