permian period

常见例句

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著称。
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。
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。