重点词汇
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公元
the Christian era; Common Era; Anno Domini; CE; AD
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缩写
abbreviate; shorten; abridge; abbreviation; acronym; initialism; contraction; abbr
Abbreviation in AD
公元
the Christian era; Common Era; Anno Domini; CE; AD
缩写
abbreviate; shorten; abridge; abbreviation; acronym; initialism; contraction; abbr