圈操的英文：
hoop exercise
n. 箍；铁环
v. 加箍于
The child trolled her hoop.
这个小孩使她的铁环旋转。
The worker bent an iron rod into a hoop.
工人把铁条弯成箍。
One of the lightweight circular supports for a hoop skirt
撑裙箍带裙环女裙中的很轻的环形支撑物
The inner surface of the hoop has rubber grips or steel cleats
环的内侧有橡皮抓子或钢楔子。
The cat's back hooped under his hand.
猫背在他的抚摸下卷缩成弓形。
n. 运动，锻炼；练习，习题
v. 锻炼，操练，练习
The exercise is that difficult!
练习题那么难！
morning exercises and setting - up exercises duringthe break
早操和课间操
Exercise stimulates the flow of blood.
锻炼促进血液循环。
Exercise is good for the health.
锻炼有益于健康。
exercising in preparation for strenuous activity.
为紧张活动而做的准备活动。