Beautiful though these threads are, 虽然这些丝看起来很漂亮

14. but in New Zealand some have turned this darkness to their advantage.
    但是在新西兰 有些动物却能利用黑暗的条件
15. A silicon strand is lowered from the ceiling,
    一根坚韧的丝从天顶上垂下
16. alongside hundreds of others.
    边上还有好几百根
17. Beautiful though these threads are,
    虽然这些丝看起来很漂亮
18. they have a sinister purpose.
    它们却是阴险的陷阱
19. This is a cave glow worm.
    这是一种洞穴萤火虫
20. 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

来自《行星地球 第一季 第四集 Planet Earth S01E04 洞穴》第 17 行