单词	Precambrian
释义	Precambrian adjective Pre·​cam·​bri·​an (ˌ)prē-ˈkam-brē-ən  -ˈkām-  : of, relating to, or being the earliest era of geologic history or the corresponding system of rocks that is characterized especially by the appearance of single-celled organisms and is equivalent to the Archean and Proterozoic eons see Geologic Time Table Precambrian noun Word History First Known Use 1864, in the meaning defined above
随便看	Cosby coscenarist coscenarists coscet Coscinodiscaceae Coscinodiscus coscinomancy coscoroba coscorobae coscorobas coscript coscripted coscripting coscripts cose cosec cosecant cosecants cosechs cosecs cosed coseism coseismal coseismals coseismic

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