4周搞定2000+托福核心词
[岩] 页岩
shale
常考释义
Fossil formations like the Burgess Shale show that evolution cannot always be thought of as a slow progression.
像伯吉斯页岩化石群这样的化石层表明进化不能总是被认为是缓慢的过程。
来源于：阅读OFFICIAL5 P3n. 页岩
The limestone, sandstone and shale of this area were soft.
这个地区的灰岩 、 砂岩和页岩都是很柔软的.
Fossil formations like the Burgess Shale show that evolution cannot always be thought of as a slow progression.
像伯吉斯页岩化石群这样的化石层表明进化不能总是被认为是缓慢的过程。
来源于：阅读OFFICIAL5 P3For example, a well-known Burgess Shale animal called Sidneyia is a representative of a previously unknown group of arthropods (a category of animals that includes insects, spiders, mites, and crabs).
例如伯吉斯页岩化石群中的一种著名动物，Sidneyia，就是一种典型的以前还不为人知的节肢动物（一种动物分类，它包括昆虫、蜘蛛、螨虫和螃蟹）。
来源于：阅读OFFICIAL5 P3The Burgess Shale formation also has fossils of many extinct representatives of modern animal groups.
伯吉斯页岩化石群也含有很多现在已经灭绝了的动物化石。
来源于：阅读OFFICIAL5 P3This fossil formation, called the Burgess Shale, is in Yoho National Park in the Canadian Rocky Mountains of British Columbia.
这种叫做伯吉斯页岩的化石群就在加拿大的大不列颠哥伦比亚石山上的约霍国家公园内。
来源于：阅读OFFICIAL5 P3The shale was deposited in an oxygen-deficient lake where lethal gases sometimes bubbled up and killed animals.
该页岩在一个缺氧的湖泊里沉积，那里时有致命的气体冒出并杀死动物。
来源于：阅读OFFICIAL20 P3The Middle Eocene Messel Shale (from about 48 million years ago) of Germany accumulated in such an environment.
德国始新世中期的麦塞尔页岩（来自4800万年前）就是在这种环境下积累起来的。
来源于：阅读OFFICIAL20 P3When oil and gas are squeezed out of the shale in which they originated and enter a body of sandstone or limestone somewhere above, they migrate readily because sandstones (consisting of quartz grains) and limestones (consisting of carbonate minerals) are much more permeable than any shale.
当石油和天然气被从形成它们的页岩中挤出，进入位于其上方某处的砂岩或石灰岩时，它们就很容易流动，因为砂岩（由石英颗粒组成）和石灰岩（由碳酸盐矿物组成）比页岩的渗透性要强。
来源于：阅读OFFICIAL43 P2以上图片仅供学习交流使用，版权归原作者所有，如有侵权，请与我方联系
