work out 在牛津双解词典里释义为:
ˌwork ˈout
1. to train the body by physical exercise 锻炼身体;做运动
I work out regularly to keep fit.
我经常做运动以保持健康。
—related noun workout
2. to develop in a successful way 成功地发展
My first job didn't work out.
我的第一份工作干得不好。
Things have worked out quite well for us.
事情的结果对我们很不错。
take exercise:做体操,做健身活动;锻炼
所以work out不等于take exercise,但work out 有 成功地发展 之意。
workout=take exercise做运动的意思,work out是解决、算出的意思,比如说一个老板跟员工说:Work that out by this afternoon ! 意思是: 今天下午给我搞定这事!