1. 冲浪板   lifejacket   shell   lifeguard   surfboard   Hint Half-n-half Clue   2. 沙子城堡   swimming trunks   sand castle   lifejacket   shore   Half-n-half Clue   3. 救生衣   pail   lifejacket   swimsuit   swimming trunks   Half-n-half Clue   4. 岸   swim   towel   shore   lifejacket   Half-n-half Clue   5. 壳   surfboard   swimming trunks   shell   swim   Half-n-half Clue   6. 桶   shovel   shore   towel   pail   Half-n-half Clue   7. 游泳裤   sea   lifejacket   swimming trunks   swimsuit   Half-n-half Clue