[jīng lì]
energy; vigour; vim
be deficient in energy; anenergia
精力不足
exceptional vitality
精力過人
be full of vitality
精力旺盛
concentrate one's efforts on doing sth.
集中精力
It's remarkable that a 70-year-old man has the stamina he had!
一個(gè)70歲的人還有他那樣的精力， 真是不同尋常。