to the verge of independence.
逐步迈向了独♥立♥的新生活
These waters attract millions of animals.
淡水吸引着数以百万计的动物
Every year, over a trillion litres of water
每年 超过一万亿升水
Freshwater transforms not only the lives of animals...
淡水不仅改变了动物的生命轨迹
It's the middle of the dry season.
正当旱季中期
Things are getting out of hand.
事情有些失控了
There are lots of eager males.
盼望得到垂青的雄性树蛙有很多
The rainforest of Costa Rica.
哥斯达黎加的雨林
Beneath the Yucatan Peninsula of Mexico...
在墨西哥尤卡坦半岛之下
A labyrinth of caves...
迷宫般的洞穴