and find the perfect spot to lay their eggs. 并找到完美的产蛋地点
is to haul themselves up onto the beach where they were born 就是要爬上它们出生的海滩
allows many more turtles to survive. 可以让更多海龟生存下来
But by the time they'd conquered the seas, the ocean was home to deadly predators. 但当它们征服大海时 海洋已经成为致命捕食者的家园
adult females must still return to dry land to lay their eggs. 每年仍要返回干燥的陆地上产卵
turtles went back to the seas their ancestors left, 海龟回到了祖先曾离开的大海
leading to a dangerous drop in blood pressure. 导致血压急剧下降
before she's big enough to stand up for herself. 才能长到足够强大 能够保护自己