1.
Train hard and defend the motherland;
锻炼身体，保卫祖国;
2.
Train hard and build the motherland.
锻炼身体，建设祖国。
3.
If you want to stay healthy, you must exercise.
想要保持健康就得锻炼身体。
4.
I work out regulary to keep fit.
我经常努力锻炼身体以保持健康.
5.
Exercising the body is as important as exercising the mind.
锻炼身体与锻炼心灵一样重要。
6.
Do you work out? How often?
你锻炼身体吗？多长时间锻炼一次？
7.
Zhu Ti rose up upon hearing the crow of a rooster to practice his swordmanship every morning.
有一个叫祖逖（ì的人，他每天早晨一听到鸡叫就起来练剑，锻炼身体。
8.
The best way to keep fit is to go in for sports.
保持身体健康的最好办法是进行体育锻炼。
9.
and exercises for about half an hour.
然后锻炼身体半小时。
10.
He does exercises to develop his muscles.
他锻炼身体使肌肉发达。
11.
No. They are just exercising.
对。她们只是在锻炼身体。
12.
No, I have no time to exercise.
不，我没有时间锻炼身体。
13.
He does exercises every day in the morning.
他每天早上锻炼身体。
14.
Do you often work out
你经常锻炼身体吗?
15.
Exercise will firm up your muscles.
锻炼身体能使肌肉结实.
16.
Regular exercise keeps him in good physical condition.
经常锻炼使他身体强壮。
17.
Take exercise if you're out of shape.
身体不好就要锻炼.
18.
He has always been very keen on doing physical exercises.
他锻炼身体一向很积极。