beach body       
noun [ C usually singular ]  informal uk/ˈbiːtʃ ˌbɒd.i/ us/ˈbiːtʃ ˌbɑː.di/
 沙滩身材
a person's body that is considered attractive enough to be seen on a beach in a swimsuit or swimming trunks
  With summer virtually here, everybody is beginning to watch what they eat in order to prepare that perfect beach body. 夏日将至,每个人都开始关注他们吃什么,这样才能为完美的沙滩身材做准备。 
 - More examples
 - I am sure that by next summer I will have my beach body!
 - At 46, the mum-of-three has a beach body most women half her age would die for.
 - Get your beach body ready with our six week workout.
 - Our fitness expert will provide nutrition advice and share the top 5 “must-do” exercises to get beach body ready in no time.