As the waves roll back, more and more sand can be seen.
海浪退下时，露出的沙滩会越来越多。
If he was accidentally caught on fire, he can always jump to the water or roll on the sand.
有甚么事烧着，都可以跳进海里，或在沙上滚。
Sometimes I go to the gravel pit and roll around in the sand.
有时我会到沙坑里在沙里翻滚取乐。
He loved to swim and roll in the sand.
它喜欢游泳和在沙滩上打滚。
He loved to swim and roll in the sand.
它喜欢游泳和在沙滩上打滚。
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