cruising back and forth between the shallow seas where life proliferates so abundantly on our planet. 让我们在浅海之间来回巡游 赞叹于地球生命的丰富多彩.
Once the prey is captured, the spider hauls itself back up it's silken safety line. 一旦猎物到手,蟹蜘蛛还可从水中全身而退
they help to recycle crucial minerals straight back into the trees. 真菌因此帮助树木直接供给树木所需的矿物质
and then head back to the dust for no apparent reason. 数小时后就绝尘而去
back at their traditional breeding grounds at last. 返回了它们阔别已久的繁殖地
recognising her song, trumpets back. 雄企鹅听到后就会大声回应
There is now no turning back for this bear. 现在已经没有回头路了
by the morning the vast majority will be back in the safety of the cave. 到了早上 大多数蝙蝠 仍会安然无恙地回到洞中