| 单词 | Precambrian |
| 释义 | Precambrian (once / 393978 pages) n WORD FAMILY Precambrian USAGE EXAMPLESThe material is alien to the locality where Precambrian rocks dominate. BBC(Nov 02, 2016) But there are also tantalizing clues, if no clear proof, of earlier life in South Dakota, from what is called the Precambrian Period. Washington Times(Oct 03, 2016) Battelle had thought its South Dakota site, to be drilled on private land into Precambrian basement rock, might succeed where North Dakota failed. Science Magazine(Sep 27, 2016) n the eon following the Hadean time and preceding the Phanerozoic eon; from about 3,800 million years ago until 544 million years ago Syn|Exp Precambrian aeon, Precambrian eon, Precambrian period aeon, eon the longest division of geological time |
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