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A silken strand is lowered from the ceiling alongside hundreds of others.
一根堅韌的絲從天頂上垂下，邊上還有好幾百根。
Beautiful though these threads are, they have a sinister purpose.
雖然這些絲看起來很漂亮，它們卻是陰險的陷阱。
This is a cave glow-worm.
這是一種洞穴螢火蟲
To trap its prey, it goes fishing with a line of silk.
它利用一根根的絲來誘捕獵物
The silk comes from glands in the glow-worm's mouth and is loaded with droplets of mucus.
絲產生自螢火蟲口中的腺體，上面綴著一串粘液滴。
Each glow-worm produces dozens of these threads.
每條螢火蟲都會吐很多根這樣的絲
0nce its lines are set, the glow-worm hangs from a mucous hammock and waits like a patient angler.
當一排絲架設完畢后，螢火蟲便用粘液將自己懸吊起來，然后像一位耐心的釣魚者似的等待獵物上鉤
But the glow-worm doesn't leave everything to chance.
不過，螢火蟲并不會聽天由命
That ghostly blue light is the result of a chemical reaction
這些詭異的藍光是一種化學反應的結果
taking place inside a special capsule in its tail.
由尾部的一個特殊腔囊產生
The light literally shines out of its backside. It's a lure for attracting prey.
這些從尾部發散出來的熒光正是用來吸引獵物的誘餌。
