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

Also finger power is very important in all other strokes such as smash, backhand clear and so on.

同时，手指的力量在杀球，打反手后场高远球也很重要。

youdao

The invention relates to body-building apparatuses, in particular to a multipurpose body-building apparatus for training finger power and holding power.

本发明涉及健身器具，特别是一种锻炼指力、 握力的多用途健身器械。

youdao

But maybe it is on power with one finger.

但是或许一个手指也可以做到。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

Politicians seeking a scapegoat for America's self-made problems too often point the finger at the growing power of once-poor countries, accusing them of stealing American jobs and objecting when they try to buy American companies.

ECONOMIST: America

The defence case relied on pointing the finger at another person entirely - Mrs Power's lover Alison Lewis.

BBC: The horrors of No.9 Kelvin Road

Power and volume controls sit under the ring and pinkie finger, feeling a bit like an old fashioned chorded keyboard.

FORBES: Sony's Xperia T Is A Muscular Monster Of A Smartphone