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单词 Silurian
释义

Silurian /saɪˈlʊəriən//sɪˈlʊriən/

英汉-汉英词典
  1. adj. 志留纪的(迄今约4亿4500万至4亿2000万年前的地质时间段,此时期有颌骨的鱼类以及陆地上的植物和小型动物第一次出现)
  2. n. 志留纪(the Silurian)
词组 | 习惯用语
silurian system 志留系
silurian period [地]志留纪
英语例句库
  1. Kapeng syderolite deposit is large,occurred in purple clayey ferruginous mudstone and grey-green clayey shale of Lower Silurian series.
    卡棚大型紫砂陶土矿主要赋存于志留系下统紫红色粘土质含铁泥岩和灰绿色粘土质页岩中,分上下2个含矿岩系,4个矿层。
  2. Based on the study of the Silurian sections in the Kalpin area of the northwestern Tarim Basin, eight ichnogenus and eight ichnospecies were recognized in the Lower Silurian Tataaiertage Formation.
    通过对塔里木盆地柯坪地区志留系塔塔埃尔塔格组上段遗迹化石的研究,识别出8属8种。
  3. From 2003 to 2004, we collected a large amount of Nautiloid and Graptolite fossils in upper metamorphic formations of Mayigangri area and determined the age to be middle and Late Ordovician-Silurian.
    在羌塘南部地区发现有可靠化石依据的早古生代地层存在尚属首次。

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原声例句
Veritasium真理元素

One of the ideas is scorpions came out of the water from Silurian period long time ago.

——其中一个想法是蝎子很久以前从志留纪时期就从水中出现了。

地心游记-The journey to the heart of the Earth

We were passing through rocks of the transition or silurian [l] system.

我们正在穿过过渡或志留纪[l]系统的岩石。

PBS Eons | fauna&flora

While fish with jaws first appeared in the Silurian, they proliferated in the Devonian.

虽然有颚的鱼最早出现在 志留纪,但它们在泥盆纪大量繁殖。

地心游记-The journey to the heart of the Earth

It could not be otherwise, for in the Silurian age the seas contained at least fifteen hundred vegetable and animal species.

不可能不是这样, 因为在志留纪时代, 海洋中至少含有一千五百种植物和动物。

PBS地球-动物趣闻

It's one of the earliest known fungi in the fossil record, dating back 440 million years, to the early Silurian Period.

它是化石记录中已知最早的真菌之一,可追溯到 4.4 亿年前的志留纪早期。

PBS地球-动物趣闻

The period that came next, the Silurian, saw the evolution of armor in many groups of fish, all around the same time.

接下来的时期, 即志留纪,见证了许多鱼群的盔甲进化,几乎是在同一时间。

PBS地球-动物趣闻

So armored fish came in a variety of shapes and sizes during the Silurian and Devonian, from tiny Heterostracans to massive Placoderms.

因此,在志留纪和泥盆纪期间, 装甲鱼的形状和大小各不相同,从微小的异类鱼到巨大的盾皮鱼。

21世纪英文报

The fish fossils were discovered at two sites in Chongqing and Guizhou, whose strata date back to the Silurian Period that began around 440 million years ago.

这些古鱼化石是在我国重庆、贵州等地志留纪早期距今约 4.4 亿年的地层中发现的。

PBS地球-动物趣闻

The culprit was an apex predator that dominated the seas of the late Silurian and early Devonian: the sea scorpion.

罪魁祸首是一种顶级捕食者,它在志留纪晚期和泥盆纪早期的海洋中占主导地位:海蝎子。

PBS地球-动物趣闻

This twofold impact known as the Ordovician-Silurian Extinction, wiped out about 25% of all taxonomic families, including about half of trilobite families.

这种被称为奥陶纪-志留纪灭绝的双重影响消灭了大约 25% 的所有分类科,包括大约一半的三叶虫科。

中文百科

志留纪

志留纪Silurian)是地质时代表古生代的第三个纪,约开始于4.4亿年前,结束于4.1亿年前。

志留系一名源于威尔士地区一个古老部族Silures。1835年,英国R.I.莫企逊,在威尔士地区创建了广义的志留系,对岩系作了划分,用笔石与壳相化石进行对比。1879年,C.拉普沃思把莫企逊广义的志留系下层命名为奥陶系。中文名源自旧时日本人使用日语汉字音读的音译名“志留纪”(音读:シルキ,罗马字:siruki)。

英语百科

Silurian 志留纪

Ordovician-Silurian boundary on Hovedøya, Norway, showing gray Ordovician sandstone and brown Silurian mudstone. The layers have been overturned by the Caledonian orogeny.



 












Marine extinction intensity during the Phanerozoic
%
Millions of years ago
(H)
K–Pg
Tr–J
P–Tr
Late D
O–S














The blue graph shows the apparent percentage (not the absolute number) of marine animal genera becoming extinct during any given time interval. It does not represent all marine species, just those that are readily fossilized. The labels of the



 












Marine extinction intensity during the Phanerozoic
%
Millions of years ago
(H)
K–Pg
Tr–J
P–Tr
Late D
O–S














The blue graph shows the apparent percentage (not the absolute number) of marine animal genera becoming extinct during any given time interval. It does not represent all marine species, just those that are readily fossilized. The labels of the
Cooksonia, the earliest vascular plant, middle Silurian

The Silurian is a geologic period and system that extends from the end of the Ordovician Period, at 443.8 million years ago (Mya), to the beginning of the Devonian Period, 419.2 Mya. As with other geologic periods, the rock beds that define the period's start and end are well identified, but the exact dates are uncertain by several million years. The base of the Silurian is set at a major extinction event when 60% of marine species were wiped out. See Ordovician-Silurian extinction events.

近义、反义、联想词
近义词
n.
period, geological period

联想词
Jurassic侏罗纪的;sedimentary沉积的;fossils化石;prehistoric史前的;geologic地质的;sediments沉淀物;geological地质的;glacial冰的;fossil化石;sandstone砂岩;vertebrate脊椎动物;
英英词典
silurian n.
  1. from 425 million to 405 million years ago; first air-breathing animals

  2. synonymous: Silurian period
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更新时间:2025/6/21 13:32:21