TSUMUGU · TOCFL 4 (est.) · 詞
公元
ㄍㄨㄥ ㄩㄢˊ · gōngyuán
noun — Common Era (CE); AD — the Gregorian calendar era in international use
關 · Related
西xīyuánCE/AD — near-synonym; 西 emphasises the Western origin前gōngyuánqiánBCE — the era before ; 前 marks the preceding period