自选动作的英文：
optional exercise
- Gymnasts perform two sets of routines on each apparatus, one compulsory and one optional.
体操运动员在每种器械上要完成两套常规运作，一套为规定动作，另一套为自选动作。
adj. 可选择的；选修的；随意的，任意的
- optional subjects
选修科目 - No highway option.
没什么捷径可言。 - Is French compulsory or optional?
法语是必修课还是选修课？ - Who has got an option on the building?
谁获得这幢建筑物的买卖选择权？ - You have an option on a piece of land.
你有买卖一地皮的选择权。
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。