permian period

常見例句

The end of the Permian period, 252m years ago, was marked by the biggest extinction of life known to have happened on Earth.
252百萬年前的二曡紀(jì)晚期以已知的地球上發(fā)生過的最慘痛的生物滅絕事件著稱。
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.
這場全球性的大災(zāi)難發(fā)生於2億5千萬年前的二曡紀(jì)晚期，其範(fàn)圍甚至比導(dǎo)致恐龍滅亡的那場災(zāi)難還要來的廣泛。
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.
而更大槼模的滅絕發(fā)生在25100萬年前二曡紀(jì)末期，致使世界上70％的陸地脊椎動物（和96%的海洋動物）死亡，同時造就了爬行動物的時代。