fitness的意思是：健康；适当；适合性。
短语：
1.physical fitness 身体健康；体力；身体适宜性
2.fitness equipment 健身器材
3.fitness center 健身中心；健身房
4.fitness club 健身俱乐部
5.fitness training 体能训练；体育训练
例句：
1.He's too hung up about fitness. 他对健身过于忧心忡忡。
2.Fitness has become an obsession with him. 他迷上了健身。
3.The long climb tested our fitness and stamina. 那次长距离爬山是对我们健康状况和耐力的考验。
4.Exercise classes cater to all levels of fitness. 训练课照顾到各种健康状况。
5.She's a non-smoking, non-drinking fitness fanatic. 她不吸烟，不喝酒，热衷健身。
6.Squash was once thought to offer all-round fitness. 壁球曾一度被认为可以提供全面的健康。
7.He has a new fitness regime to strengthen his back. 他有一套新的健康养生法来加强他的背部力量。
