These vents give off so much energy that some of the worms reach three meters in length. 这些火山口带来的丰富的能源 甚至可以让这些蠕虫长到3米长
All told, over fifty different species have so far been found living here. 据统计,超过50种生活在这里的生物被发现
so widely separated, that each community is unique. 如此广阔的分隔,以至于每个群落都是独特的
So, beyond the farthest reach of the Sun's power a rich independent community exists, 即使在没有太阳的能量驱动, 也会诞生丰富的共生动物群
The dense shoals, on which so many depend gather only when water conditions are perfect. 只有在水况非常好的情况下 才会出现这样的鱼群聚集
so the progression of summer to winter dictates life in more temperate regions. 从夏季到冬季的变换 也决定了温带地区的生物物种