1.Reefy boundstone or framework commonly contains large cavities formed through rapid organic growth.

1.礁的粘结岩成骨架中通常有大洞，是由于生物快速生成形成的。

2.The olive sea snake is a peaceful animal that travels along the reefy sea bottoms of the tropics in search of small prey.

2.行和海洋。这橄榄色的海蛇是一种和平的安宁的动物，它巡游多数带的海洋暗礁的底部寻找小的牺牲者。