英语释义

• from 280 million to 230 million years ago; reptiles

片语

permian volcanic二叠系火山巖

permian period二叠纪

middle permian中二迭世

Permian base二叠系底界

Permian Symbols叠音符号

permian strata二叠系地层

permian series二叠系

permian reservoir二叠系储层

permian reservoirs二叠系储层

permian orogeny二叠纪造山作用

英汉例句

• The die-off, which occurred worldwide about 250 million years ago at the end of the Permian period, was even more extensive than the one that wiped out the dinosaurs.

  这场全球性的大灾难发生于2亿5千万年前的二叠纪晚期，其范围甚至比导致恐龙灭亡的那场灾难还要来的广泛。

• When Grasby and his team analyzed rocks from just before the Permian mass extinction, they noticed unusual microscopic particles.

  当Grasby和他的团队分析了「二叠纪灭绝」前的巖石成分后，他们注意到一些不寻常的微观颗粒。

• Grasses did not exist at that time but it may have fed on stems or leaves of Permian flora.

  然而剑齿龟生活的年代还没有草生长，因而食物来源可能是二叠纪植物群的茎或叶。

• The die-off was surpassed only by the gargantuan Permian extinction 250 million years ago.

  只有2亿5000万年前史上空前的二叠纪大灭绝盖过这次灭绝。

• Most rock sequences that straddle the end of the Permian are either incomplete or hard to date.

  二叠纪末期大部分巖石记录要么残缺不全，要么难以断代。

• 「Wet Willi」 will be the star of the Permian section of the HMNS「 newly renovated paleontology hall, opening in 2012.

  休斯顿自然科学博物馆最近对其古生物展示大厅进行了翻新改造，并将于2012年正式开放。而「潮湿威利」将成为这里二叠纪分部的明星展品。

• The Permian extinction—the worst extinction event in the planet\」s history—is estimated to have wiped out more than 90 percent of all marine species and 70 percent of land animals.

  二叠纪的生命大灭绝，是我们这个星球上最可怕的一次物种灭绝，海洋的90%的生命以及陆地上70%的生命都消失了。

• The Earth has witnessed several mass extinctions in its 4.5bn year history, but the event that struck at the end of the Permian was unequaled in scale.

  地球在她45亿年的历史长河中，已经见证了几次大规模的灭绝，但是发生在二叠纪末的整个重大事件在规模上堪称史无前例。

• At the end of the Permian period 250m years ago, between 80% and 96% of all living Marine species were extinguished, along with 70% of land animals. The cause is unclear.

  5亿年前，二叠纪(thePermianperiod)接近尾声，这时大约80%至96%的海洋生物和接近70%的陆地动物消失，其中的原因至今不明。

• The end of the Permian period, 252m years ago, was marked by the biggest extinction of life known to have happened on Earth.

  252百万年前的二叠纪晚期以已知的地球上发生过的最惨痛的生物灭绝事件着称。

• A few of the CTAM staff organized a day trip to the mountains of the Queen Alexandra Range east of camp to look at the Glossopteris fossils preserved in the Permian sediments exposed there.

  几位CTAM营地的工作人员安排了为期一天的行程，到营地东侧的亚历山德拉皇后山脉露营并勘察暴露在外的二叠纪沉积巖中的舌羊齿化石。

• Finding cenospheres in late Permian rocks worldwide would bolster the notion that the tiny particles played a major role in causing the extinction, says Grasby.

  Grasby说，只要在全球范围的二叠纪巖石中发现「煤胞」的存在，那由这些致命微粒导致大灭绝的理念就可以得到极大的佐证。

• The end of the Permian period, 252m years ago, was marked by the biggest extinctionof life known to have happened on Earth.

  两亿五千两百万年前的二叠纪末期，发生了地球上迄今为止所知的最大一次生物灭绝。

• This was the end of the Permian period, and of the era of life called the Paleozoic.

  这就是二叠纪以及整个古生代的终结。

• Previously, the only dateable layers were from the moment the Permian ended and from a subsequent volcanic event some 14m years later.

  在此之前唯一可以确定年代的地层是二叠纪结束的时刻，以及大约1400万年后的火山爆发事件。

• The loss of so many species at the end of the Permian gave new creatures the chance to take their place.

  生存在二叠纪末的许多丢失的物种会产生新的生物体的机会来取代原有物种。

• A bigger mass extinction, at the end of the Permian period 251m years ago, killed 70% of the world's land vertebrates (and 96% of all Marine animals) and paved the way for the age of reptiles.

  而更大规模的灭绝发生在25100万年前二叠纪末期，致使世界上70%的陆地脊椎动物(和96%的海洋动物)死亡，同时造就了爬行动物的时代。

• The Permian period, which ended in the largest mass extinction the Earth has ever known, began about 299 million years ago.

  二叠纪开始于2.99亿年前，并以地球上最大规模的物种灭绝而结束。

• The easily available oil from West Texas’s Permian Basin, the richest oilfield in America, is mostly gone now. The best way to extract the remainder is to pump gas down to force the oil out.

  西德克萨斯的帕米亚盆地(Permian Basin)是美国储量最丰富的油田，不过里面容易开采的石油已经所剩无几，开采剩余石油的最好办法是打入气体迫使石油涌出。