- amphibians have survived for over 350 million years.
但两栖动物已在地球上生存 超过3.5亿年 - And yet, they never conquered every environment the planet had to offer...
然而它们并未征服 地球上的每一种环境 - because there's something all amphibians need to raise their young.
因为所有两栖动物养育后代 都需要一样东西 - Water.
水 - This is the strawberry dart frog of Costa Rica.
这是哥斯达黎加的草莓箭毒蛙 - Her tadpoles are in mortal danger.
它的蝌蚪危在旦夕 - Their tiny puddle, almost dry.
小水洼几乎快要干涸
Water. 水
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