When I was age 12, I did about 300-500 finger power actions with racket cover on.

当我12岁的时候，我经常用包着拍套的球拍做300 - 500次手指的力量练习。

youdao

The way to do it I need to explain in action. Wrong training with racket cover on is very dangerous.

但必须说明的是，错误的练习方式是非常危险的。

youdao

Does this cover come with the racket?

这球拍套子是和球拍一起的吗？

youdao

At the time the consumer organisation Citizens Advice dubbed the sale of PPI policies a "protection racket", saying they were often too expensive and failed to provide the level of cover that customers thought they were getting.

BBC: Car dealers fined over insurance