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A silken strand is lowered from the ceiling alongside hundreds of others.
一根坚韧的丝从天顶上垂下，边上还有好几百根。
Beautiful though these threads are, they have a sinister purpose.
虽然这些丝看起来很漂亮，它们却是阴险的陷阱。
This is a cave glow-worm.
这是一种洞穴萤火虫
To trap its prey, it goes fishing with a line of silk.
它利用一根根的丝来诱捕猎物
The silk comes from glands in the glow-worm's mouth and is loaded with droplets of mucus.
丝产生自萤火虫口中的腺体，上面缀着一串粘液滴。
Each glow-worm produces dozens of these threads.
每条萤火虫都会吐很多根这样的丝
0nce its lines are set, the glow-worm hangs from a mucous hammock and waits like a patient angler.
当一排丝架设完毕后，萤火虫便用粘液将自己悬吊起来，然后像一位耐心的钓鱼者似的等待猎物上钩
But the glow-worm doesn't leave everything to chance.
不过，萤火虫并不会听天由命
That ghostly blue light is the result of a chemical reaction
这些诡异的蓝光是一种化学反应的结果
taking place inside a special capsule in its tail.
由尾部的一个特殊腔囊产生
The light literally shines out of its backside. It's a lure for attracting prey.
这些从尾部发散出来的荧光正是用来吸引猎物的诱饵。
