Since you need to challenge a muscle regularly for it to build and keep strength, it's a good idea to practice this action a few times a week.

因为你要训练一块肌肉，让它塑形和加强力量，你应该一周做几次这样的练习。

youdao

If you take away my success, let me keep my strength to succeed from failure.

如果您要剥夺我的成功，请您给我保留从失败中获得成功的力量。

youdao

It had taken all his strength to keep her pinned down and let the garrote do its job.

制服她就费劲了他的所有力气，后面就由绳索完成任务了。

youdao

Agriculture Report. Plant breeders and genetic engineers keep working to give crops the strength to resist threats like insects,diseases, droughts or floods.

VOA: special.2009.10.27

To keep up his strength, Henry will need to consume about 7, 000 calories a day.

BBC: Devon

It is time for America to keep its military strength at home.

ECONOMIST: Responding to terror

If we keep getting the right kids in, keep getting them the right international experience and coaching and training camps, I don't see why we can't keep going from strength to strength.

BBC: Great Britain amateur boxers praise coach Rob McCracken