C-E

名词 c-e:

1. a ductile grey metallic element of the lanthanide series; used in lighter flints; the most abundant of the rare-earth group
   同义词：cerium, Ce, atomic number 58

副词 c-e:

1. of the period coinciding with the Christian era; preferred by some writers who are not Christians
   同义词：CE, C.E., Common Era