Whether the first birds evolved from arboreal or terrestrial ancestors is a matter of lively debate among palaeontologists .

关于第一只鸟是从树栖还是陆生的祖先进化而来，一直是古生物学家激烈争论的话题。

That makes the fossils found within the rocks terrestrial and not marine , he contends .

他说；那些藏在岩石里的生物化石都是在陆地上被发现，而不是在海里。

Fly larvae are the top-level predator in the pitcher , the analogues of terrestrial tigers or wolves .

在猪笼草中，蝇幼虫是最高层次的捕食者，类似于陆地的老虎和狼。

Monochromatic vision is very rare among land species , because color vision is a tool for survival in terrestrial habitats .

单色视觉能力在陆地生物中非常罕见，因为分辨颜色的能力是陆地生物生存的一项工具。

" When pluto was first discovered in 1930 , it just looked like an oddball , " stern said . " We had the four rocky , terrestrial planets and the four big gas giants , and then we had this odd thing pluto . "

“当1930年冥王星第一次被发现的时候，它看上去的确是个异类，”stern说，“在我们的行星体系中，四个是岩质的、类似地球的行星，四个是巨大的气体行星，而唯一与众不同的就是冥王星。”

Since the largest dinosaurs have skeletons a lot larger than any living terrestrial species , such extrapolation is fraught with difficulty .

因为最大的恐龙的骨骼比任何现存陆地动物都要大很多，所以此类外推充满了困难。

Sampling both living terrestrial carnivores and the fossils of extinct ones , they analyzed overall brain volume relative to body mass in fully 289 species .

他们从陆地食肉动物和早已灭绝的肉食动物化石取样，对总共289个物种的整个脑容量与体重进行了分析。

This spotted leech scientifically named phytobdella catenifera of malaysia is a large terrestrial leech that can grow up to 5cm long .

科学上称作马来西亚phytobdellacatenifera的水蛭是一种可以长到5厘米长的大型陆地水蛭。

But the rock is reasonably widespread , being both the underlying stuff of ocean floors and a common outpouring of terrestrial volcanoes .

但是，这种岩石还是相当广泛，因为它既是海床基本物质，也是常见的陆地火山喷发物。

According to an estimate made in 2009 , terrestrial permafrost holds about 1.7 trillion tonnes of carbon , roughly twice as much as the atmosphere .

根据2009年的估计报告，陆地永久冻土保存了大约1.7万亿吨碳，粗略地估计是大气层含碳量的两倍。