鸟类

Britain's most numerous bird is also the most widespread in the archaeological record, but some of the more charismatic species also have a rich historical pedigree.

英国最众多的鸟类，也是最广泛的考古纪录，但更魅力的一些物种也有丰富的历史谱系。

Thus, Archaeopteryx plays an important role not only in the study of the origin of birds but in the study of dinosaurs.

因此，始祖鸟不仅在鸟类起源，而且在恐龙的研究上，都扮演着一个重要的角色。

The Archaeopteryx is the most ancient bird and is an amazing animal ever.

始祖鸟是最古老的鸟类，是一种神奇的动物。

This confirms what has been observed in two other transitional fossils, Archaeopteryx and Rodhocetus (a proto-whale).

这就肯定了从另外两个过渡的生物化石Archaeopteryx(始祖鸟，最古老的鸟类)和Rodhocetus。

To support his hypothesis he pointed out that several fossils of the oldest known bird, archaeopteryx, lack feathers.

为了证明这种观点，他指出，已知的最早的鸟类——始祖鸟的一些化石也没有羽毛。

To support his hypothesis he pointed out that several fossilsofthe oldest known bird, archaeopteryx, lack feathers.

为了证明这种观点，他指出，已知的最早的鸟类——始祖鸟的一些化石也没有羽毛。

With hindlimb feathers, as well as flight muscles less developed than those of present day birds, Archaeopteryx may have found it difficult, if not impossible, to take off directly from the ground.

与后肢的羽毛，以及飞行肌欠发达，比那些现今的鸟类，始祖鸟可能发现很难，如果不是不可能的起飞，直接从地面。

The earliest known bird - Archaeopteryx - comes from the Late Jurassic period in Germany.

最早知道的鸟类--始祖鸟--来自侏罗纪晚期的德国。

One of the mostfamous fossils of all time is Archaeopteryx, which combines feathersand skeletal structures peculiar to birds with features of dinosaurs.

长期以来，最知名的一种就是始祖鸟，它身上既出现了鸟类独有的骨骼结构和羽毛，又出现了恐龙的特征。

In view of this, the world places hopes of tracing the more primitive and more ancient, true ancestor of birds in China, and Chinese scientists also expressed possibly discovering fossils of birds earlier than the archaeopteryx in China

鉴于此，国际上对在中国寻找出更原始、更古老的鸟类的真正祖先寄予希望，而中国科学家也表示，在中国有可能发现比始祖鸟更早的鸟的化石。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐