Yet once a year, 但是成年雌海龟

195. or enticed by opportunity...
     还是受到机遇的诱惑
196. turtles went back to the seas their ancestors left,
     海龟回到了祖先曾离开的大海
197. and today inhabit all but the coldest oceans.
     如今栖息在 除最冷的海洋之外的所有海洋中
198. Yet once a year,
     但是成年雌海龟
199. 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
200. Here, on the edge of the Great Barrier Reef...
     在大堡礁的边缘
201. they come together in their thousands.
     它们成千上万结伴而来

来自《我们星球上的生命 第一季 第四集 Life on Our Planet S01E04 冷血动物》第 198 行