1. 冲浪   sunshine   hat   umbrella   surfing   Hint Half-n-half Clue   2. 中暑   sunglasses   sunstroke   motorboat   slipper   Half-n-half Clue   3. 汽艇   motorboat   surf   sunshine   shellfish   Half-n-half Clue   4. 救生艇   sunglasses   hat   lifeboat   cap   Half-n-half Clue   5. 日落   sunshade   swimming   sunset   dune   Half-n-half Clue   6. 游泳   sunrise   swimming   sunshade   surfing   Half-n-half Clue   7. 凉鞋   sunrise   umbrella   shellfish   sandal   Half-n-half Clue