他在一次练习课上扭伤了背部。

He strained his back during a practice session.

《柯林斯英汉双解大词典》

这是很好的练习，在柱坐标下再算一次，看看结果一不一样。

A good exercise: do it in cylindrical and see if you get the same thing.

youdao

有一次，他们在阳光下各持一把剑练习着。

Once in the sun holding a sword of Damocles over practicing.

youdao

在镜子前再练习一次你准备好的答案。

Practice your answers in front of a mirror again.

youdao

每个周日在北海公园举行一周一次的流瑜伽的练习！

A weekly celebration of life through the practice of Yoga.

youdao

瓦伦西亚第一次练习，在星期五早晨举行。

First practice at Valencia takes place on Friday morning.

youdao

瓦伦西亚第一次练习，在星期五早晨举行。

First practice at Valencia takes place on Friday morning.

youdao