有奖纠错
| 划词

According to the conodont and fusulinid fossils,their ages are determined to be Devonian-Permian.

所含化石确定地层成时代为泥盆纪纪。

评价该例句:好评差评指正

用户正在搜索


lacunosus, lacunula, lacunule, lacus, lacustrian, lacustrine, lacy, lad, Lada, ladanum,

相似单词


3G, 401(K), a,

声明:以上例句、词性分类均由互联网资源自动生成,部分未经过人工审核,其表达内容亦不代表本软件的观点;若发现问题,欢迎向我们指正。

PBS-物趣闻

And conodonts were all of those things -- abundant, widespread, and composed of lots of distinctive species.

牙形刺就是所有这些——数量丰富、分布广泛,并且由许多独特的物组成。

评价该例句:好评差评指正
PBS-物趣闻

So conodont elements quickly became one of the handiest tools in the geologist toolkit.

因此,牙形刺元素迅速成为质学家工具包中最方便的工具之一。

评价该例句:好评差评指正
PBS-物趣闻

It was only marginally more fish-like than its earlier relatives, hagfish and conodonts, with which it shared a common ancestor.

它只比它的早期亲戚盲鳗和牙形刺更像鱼,它们与它们有一个共同的祖先。

评价该例句:好评差评指正
PBS-物趣闻

Likewise, in the Triassic Period, nearly every age is defined by the first appearance of various conodonts.

同样,三叠纪时期,几乎每个时代都由各牙形刺的首次出现来定义。

评价该例句:好评差评指正
PBS-物趣闻

In fact, many subdivisions of the Paleozoic are actually defined by when certain conodont species first or last appear.

事实上,古生代的许多细分实际上是根据某些牙形石物首次或最后出现的时间来定义的。

评价该例句:好评差评指正
PBS-物趣闻

But conodont elements can do more than just that!

但牙形刺元素可以做的不止于此!

评价该例句:好评差评指正
PBS-物趣闻

It turns out that conodont elements actually change color when they're heated up.

事实证明,牙形刺元素时实际上会改变颜色。

评价该例句:好评差评指正
PBS-物趣闻

But meanwhile, paleontologists still had no idea what kind of animals conodonts were.

但与此同时,古生物学家仍然不知道牙形刺是一什么样的物。

评价该例句:好评差评指正
PBS-物趣闻

But while paleontologists were spending a hundred years or so debating what conodonts were, geologists were discovering what conodonts could do.

但是, 当古生物学家花了大约一百年的时间争论什么是牙形刺时,质学家正发现牙形刺的作用。

评价该例句:好评差评指正
PBS-物趣闻

So it turned out that they weren't conodont animals; they were fossils of creatures that ate conodont animals!

所以事实证明它们不是牙形石物;它们是吃牙形物的生物的化石!

评价该例句:好评差评指正
PBS-物趣闻

But further study revealed that the conodont elements found in those fossils were actually in the animals' guts.

但进一步的研究表明,这些化石中发现的牙形刺元素实际上存物的内脏中。

评价该例句:好评差评指正
PBS-物趣闻

Please allow me to introduce you to the conodonts.

请允许我向您介绍牙形刺。

评价该例句:好评差评指正
PBS-物趣闻

In the 1970s, fossils of some vaguely fish-like creatures were found in Montana that were thought to be conodont animals.

20 世纪 70 年代,蒙大拿州发现了一些被认为是牙形物的隐约鱼类生物的化石。

评价该例句:好评差评指正
PBS-物趣闻

Thanks to these beautiful specimens, we were able to learn that conodont animals were a kind of fish after all!

多亏了这些美丽的标本,我们才知道牙形物毕竟是一鱼!

评价该例句:好评差评指正
PBS-物趣闻

So they were given the name conodont, which means " cone tooth." These elements are all verrry tiny.

因此,它们被命名为牙形石,意思是“圆锥齿”。这些元素都非常小。

评价该例句:好评差评指正
《分钟》趣味科普(精选双语)

One hundred million years later, the warm, shallow seas were packed with tiny plants and animals — essentially, hors d'oeuvres for a plethora of bigger creatures like trilobites, conodonts, brachiopods, and corals.

一千万年之后,温暖的浅海充满了微小的植物和物——基本上是大量大型生物的开胃菜,如同三叶虫,牙形虫,腕足类和珊瑚。

评价该例句:好评差评指正
PBS-物趣闻

Like modern lampreys and hagfish, conodonts were jawless fish, and they were one of the earliest and most successful groups of vertebrates.

像现代的七鳃鳗和盲鳗一样, 牙形刺是无颌鱼,它们是最早和最成功的脊椎物群之一。

评价该例句:好评差评指正
PBS-物趣闻

Their final extinction brought an end to 300 million years of conodonts' role as a cornerstone of the world's ocean communities.

它们的最终灭绝结束了 3 亿年来牙形刺作为世界海洋群落基石的作用。

评价该例句:好评差评指正
PBS-物趣闻

And the fossils also revealed that the tiny, tooth-like conodont elements were concentrated in the animal's mouth -- but also in its throat!

化石还显示,细小的、类似牙齿的牙形刺元素集中物的嘴里——但也它的喉咙里!

评价该例句:好评差评指正
PBS-物趣闻

Throughout their history, conodonts were affected by several mass extinctions, including the Great Dying at the end of the Permian Period 252 million years ago.

纵观它们的历史, 牙形到了几次大规模灭绝的影响,包括 2.52 亿年前二叠纪末期的大灭绝。

评价该例句:好评差评指正
加载更多

用户正在搜索


ladders, laddertron, ladderway, laddic, laddie, laddish, laddishness, lade, Ladefoged, laden,

相似单词


3G, 401(K), a,
  • 微信二维码

    关注我们的微信

  • 手机客户端二维码

    下载手机客户端

赞助商链接