Marine iguanas lay their eggs in sand. 海鬣蜥将蛋下在沙子里

143. and, in turn, provide a welcome exfoliation service.
     反过来也热情地为它们提供去角质服务
144. While smaller lizards prey on the flies that pester the colony.
     小型蜥蜴还捕食纠缠海鬣蜥的苍蝇
145. But not all the relationships on this island are so harmonious.
     但岛上的生存关系并不是都如此和谐
146. Marine iguanas lay their eggs in sand.
     海鬣蜥将蛋下在沙子里
147. In June, when the hatchlings emerge, they are vulnerable.
     每到六月 刚破壳的小鬣蜥异常脆弱
148. They must join the adults at the edge of the sea.
     它们必须到海边与成年海鬣蜥汇合
149. But the journey will be a dangerous one.
     但这将是一次危险的旅程

来自《行星地球 第二季 第一集 Planet Earth S02E01 岛屿》第 146 行