听力文本

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。

词汇解析

1.be loaded with...
Stay extra safe: You'd never put raw meat, which can be loaded with bacteria, directly on the counter.
更安全的做法： 不要把生肉直接放在灶台上，因为生肉表面满载细菌，其它未经过清洗的原料也一样。

2.hang from 从…悬挂
Inside a warehouse, giant slabs of meat hang from the ceiling and butchers stand about, chopping beef.
在一座仓库里，天花板下悬挂着一些大块的肉片，站着的屠夫们在忙着砍、切牛肉。

3.leave everything to chance 听天由命
I say this because many people leave everything to chanceto achieve their dreams and are too timid to transform.
我这样说是因为很多人在实现他们梦想的时候只是听天由命，而且他们过于胆小而不能完成转变的过程。

视频及简介

洞穴是不受阳光控制的生物栖息地之一，但这并不意味着那里就不存在野生生物。本集节目将深入洞穴内神秘而永恒的黑暗，探索山洞、洞穴和隧洞中未知的地下世界。