The crossbill's extraordinary beak can prise apart the scales, 交喙鸟用非常特别的喙分开松果的鳞片
Creatures are scarce because few can eat conifer needles. 这里缺乏生物的原因是很少有生物以针叶为食
At the Taiga's northern extent the growing season can last for just one month a year. 在针叶林的北部区域 树木的一年内的生长时节只有1个月
It can take fifty years for a tree to get bigger than a seedling. 一棵树从秧苗到成年需要50年的时间
This is the very first place that trees can grow. 这也是树木长到的最北处
As you travel towards the poles north or south the colder, stormier seas can become even richer. 当你朝南北两极旅行 更冷,更多风暴的海域才是更加富饶的
Short tailed stingray can be up to two meters across. 短尾黄貂鱼身长可达2米
and they can grow by half a meter a day. 它们每天还能长半米
Krill, shrimp like creatures. By weight they're the most abundant animals on the planet. A single swarm can contain two million tons of them 磷虾,一种小型虾类,如果按重量计算 他们是地球上最多量的动物,一群就可达200万吨
Individuals link together to form chains which can stretch for fifteen meters. 这些一个个单体组成的链条可长达15米