that drift invisibly away. 无形地飘散各处

253. They're hidden until they begin to develop
     它们隐匿起来 直到绽放的时刻
254. the incredible structures with which they reproduce.
     便以惊人的姿态生长繁殖
255. Each releases millions of microscopic spores
     每株蘑菇释放出数以百万的微型孢子
256. that drift invisibly away.
     无形地飘散各处
257. Many have fruiting bodies
     许多长出子实体的蘑菇
258. that reach upwards to catch any feeble current
     努力朝上生长 以捕捉潮湿空气中
259. there might be in the clammy air.
     可能存在的稀薄氧气

来自《行星地球 第二季 第三集 Planet Earth S02E03 丛林》第 256 行