Unit3WordsExpression

fitness/?f?tn?s/n.健康；健壮；适合fitnesscenter1.physicalandmentalfitness身心健康2.fitadj.健康的，健壮的/v.（使）合身；（大小、形状）合适keepfit/stayfit(保持健康)befitforsb./sth.(适合...)befittodosth.(适合做某事)unfitadj.不健康的：不合适的，不胜任的Themovieisnotfitforchildre