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公元前 gōngyuánqián
earth.sc. Before the Christian Era
geol. before the common era
lat. Anno Ante Christum
space Ante Christum
tech. Before Christ; pre-Christian era
公元前缩写为B. C. gōngyuánqián
gen. Before Christ
元前
gen. before Christ
公 元 前
: 2 phrases in 1 subject
Technology2