Permian
柯林斯詞典
1. ADJ of, denoting, or formed in the last period of the Palaeozoic era, between the Carboniferous and Triassic periods, which lasted for 60?000?000 years 二疊紀的
2. N the Permian period or rock system 二疊紀; 二疊統(tǒng)
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Permian /?p??m??n/
劍橋詞典
- from or referring to the period of time between about 290 and 250 million years ago, in which large reptiles and amphibians appeared , and that ended with most species on earth becoming extinct (= dying out completely )
二疊紀（迄今2億9000萬至2億3000萬年前，其間出現(xiàn)大型爬行動物和兩棲動物，大部分物種在這期間的最后滅絕）
the Permian period 二疊紀
Permian rocks 二疊紀巖石
the Permian
noun [ 單數(shù)名詞 ]the Permian period
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