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Hunters living in the dense understorey of the jungle come in all shapes and sizes.
在濃密的下木層中生活的捕獵者形態各異。
But they share a problem.
但它們有一個共同的難題。
How to tell what is a plant, and what is prey.
如何分辨植物和獵物。
This is a game of hide and seek that can be won or lost in the blink of an eye.
這是個捉迷藏游戲，眨眼間就能定輸贏。
The long contest between predator and prey has produced mimicry of astounding accuracy.
捕獵者和獵物之間經過漫長的斗爭，形成了令人震驚的擬態水平。
A leaf-tailed gecko masquerading as lichen.
一只葉尾壁虎正偽裝成地衣。
Some animals take camouflage a stage further still...
有些動物把偽裝發揮到更高境界
and these streams in Costa Rica are home to one of the most remarkable.
在哥斯達黎加的這條小溪里住著一位杰出的偽裝大師。
A glass frog. A male, and tiny, no bigger than your fingernail
一只玻璃蛙。這只雄蛙尺寸迷你，只有人的指甲大小，
and almost entirely transparent... as he needs to be.
身體幾乎完全透明，這很有必要。
Almost everything that walks past here could eat him, even a cricket.
幾乎所有經過這里的動物都能吃掉它，甚至是一只蟋蟀。
His best chance is to stay absolutely still and trust that the cricket looks right through him.
想活命，它就要保持靜止不動，希望蟋蟀的視線能直接穿透它。
