| 释义 |
Cre·ta·ceous 英krɪˈteɪʃəs美krɪˈteʃəs；krɪˈteɪʃəs 高ＴCOCA⁴⁵⁰⁰³BNC¹⁸¹³⁷
基本英英搭配记法近义反义例句例句
adj.白垩的¹⁴;白垩纪的¹⁸n.白垩纪⁴³;白垩系²⁵副词cretaceously
Noun:
from 135 million to 63 million years ago; end of the age of reptiles; appearance of modern insects and flowering plants
Adjective:
abounding in chalkof or relating to or denoting the third period of the Mesozoic eracretaceous白垩的cretaceous oil白垩纪石油cretaceous period白垩纪cretaceous oils白垩纪石油the cretaceous白垩纪或其岩石…
cret-aceouS,⇒adj.白垩的¹⁴;白垩纪的n.白垩纪⁴³;白垩系²⁵;adj.地白垩纪的 n.地白垩纪近义词 white白色的milky乳状的chalky白垩的cretaceous period白垩纪
形容词70%,名词30%
用作形容词The story takes place 6500 years ago in the late Cretaceous period.故事发生在6500万年前的白垩纪晚期。用作名词From the Cretaceous, Tarim basin began the new evolutional stage of foreland basin.从白垩纪初期开始 The assembled family tree shows that lice started to radiate into new species well before the end of the Cretaceous period, Dr. Smith and his colleagues report in the current issue of Biology Letters.
史密斯博士和他同事在《生物学快报》上发文指出，建立起的系统树表明在白垩纪末期之前虱子早就开始进化出不同的新物种。 yeeyan
The really strange thing is that there is absolutely no hint of anything happening at the end of the Cretaceous.
真正让人感到不解的是,在白垩纪时代所发生的一切变化却找不到任何线索. ecocn
The Cretaceous—the last period when dinosaurs ruled the roost— was followed by the Palaeocene.
恐龙主宰世界的最后一个时期是白垩纪时代,之后就进入了古新代. ecocn
“ For millions of years, until their extinction at the end of the Cretaceous, duck-billed dinosaurs, or hadrosaurs, were the world's dominant herbivores, ” Purnell said.
在几百万年间，直到他们在白垩纪结束时消失之前，鸭嘴龙是地球上最主要的食草动物。 yeeyan
An extraterrestrial impact is most closely linked to the Cretaceous extinction event.
天外来客对地球的撞击与白垩纪的物种灭绝事件有着最为密切的联系。 yeeyan
Before the mid- Cretaceous,100 million years ago or so, flowering plants were scarce: conifers and their relations ruled the landscape.
白垩纪中期之前，也就是说大约1亿年前，开花植物很少见：裸子植物占据着地球的景观。 yeeyan
Deeper— or shorter—snouts may have evolved in concert with a more powerful bite and smaller forearms in tyrannosauroids in western North America and Asia, which were connected during the Cretaceous.
对北美西部和亚洲的霸王龙来说，较深或者较浅的口鼻部是伴随更有力的咬合力和更短的前臂一同进化的，这个过程应该发生在白垩纪时期。 yeeyan
In his view, the hosts on which lice were speciating during the Cretaceous could have been a different branch of the mammalian family tree, all of whose species are extinct.
在他看来，在白垩纪虱子物种进化时的宿主可能是哺乳动物系统树上的另一分支而这一分支上的所有物种都灭绝了。 yeeyan
It says lice are old, predate the Cretaceous- Paleogene boundary, and must have been living on something.
它说明了虱子的历史非常久，在白垩纪-早第三纪过渡期之前，而且也肯定是寄生在某种生物上的。 yeeyan
Its discovery pushes back the date of when flowering plants diversified to around127 million years ago, during the early Cretaceous period.
这项发现将开花植物开始多样化的时间推到了大约一亿两千七百万年前，那时正是白垩纪的早期。 yeeyan
Niedzwiedzki and Singer's discovery was reported in the journal Cretaceous Research.
尼德韦德兹克和司辛格的发现在杂志《白垩纪研究》上面发表了。 cri
Not exactly outer space then, or the Cretaceous period.
而并不是外太空或是白垩纪。 yeeyan
One was an isolated feather dating from the Cretaceous period about100m years ago that was found in Brazil.
其中一个是在巴西发现的白垩纪约1亿年前的一根羽毛。 ecocn
Only, there are no spoonbill fossils from the early Cretaceous, so there is no way to say for sure.
只是没有发现来自白垩纪早期的篦鹭化石，所以没法肯定这一说法。 yeeyan
Scientists believe that during the Cretaceous period, a spate of volcanic activity caused plant life to bloom on the surface of the oceans.
科学家认为，在白垩纪，一连串的火山活动导致植物在海平面生长旺盛。 yeeyan
That means that our record of Balaur is restricted to the very end of the Cretaceous.
这意味着我们有关巴拉乌尔龙的记录限定于白垩纪的晚期的晚期。 yeezhe
That's the conclusion paleontologists Mike Taylor and Matt Wedel came to after analyzing the fragmented remains of two Cretaceous-period sauropods.
这是古生物学家马克·泰勒和马特·威德尔经过对两头白垩纪蜥脚类恐龙的残留碎片分析后得出来的结论。 aizheng
The temperature drop during the Cretaceous period would almost certainly have wiped out an'abundance' of the world's dinosaurs.
曾经称霸地球显赫一时的恐龙，在白垩纪时代的这次温度巨变中，似乎全都灭绝了。 cri
You don't need to make a sound while your five good neurons crank out the next malformed sentence from your cretaceous skull, numb nuts.
你没必要在仅存的五个健全脑细胞从白垩纪脑袋里挤出畸形答案时发出声音，呆瓜。 yeeyan |