kung fu

例句：

1. 1. He practices kung fu every day to stay fit.
   他每天练习功夫来保持健康。
2. 2. The old man is a master of kung fu.
   这位老人是功夫大师。
3. 3. Kung fu has become popular in the world of martial arts.
   功夫在武术界变得流行起来。