the state of being physically healthy and strong 健康；健壮◆They operate a chain of fitness clubs. 他们经营连锁健身俱乐部。◆the health and fitness sector/industry 卫生与健康部门／行业◆We need to ensure the company's financial fitness. 我们需要确保公司的财务状况处於最佳状态。
the state of being suitable or good enough for sth 适合（某事物或做某事）◆There were doubts about her fitness for the position. 她是否称职还有疑问。