英语词汇“Ordovician”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

WORD FAMILY

Ordovician

USAGE EXAMPLES

The island chain sits on top of the Trenton Group, a formation of rocks that date back to the Ordovician period.

The Verge(Jul 10, 2016)

"We've been hunting these Ordovician meteorites for 25 years. We found 50, then 60, then 70 - and it was getting boring," he told BBC News.

BBC(Jun 14, 2016)

He showed me mineralized veins in the walls, glittering between rough slabs of black Ordovician slate.

The New Yorker(Apr 13, 2015)

n from 500 million to 425 million years ago; conodonts and ostracods and algae and seaweeds

Syn|Exp

Ordovician period

geological period, period

a unit of geological time during which a system of rocks formed

单词	Ordovician
释义	Ordovician (once / 89541 pages) n WORD FAMILY Ordovician USAGE EXAMPLES The island chain sits on top of the Trenton Group, a formation of rocks that date back to the Ordovician period. The Verge(Jul 10, 2016) "We've been hunting these Ordovician meteorites for 25 years. We found 50, then 60, then 70 - and it was getting boring," he told BBC News. BBC(Jun 14, 2016) He showed me mineralized veins in the walls, glittering between rough slabs of black Ordovician slate. The New Yorker(Apr 13, 2015) n from 500 million to 425 million years ago; conodonts and ostracods and algae and seaweeds Syn\|Exp Ordovician period geological period, period a unit of geological time during which a system of rocks formed
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