bc
abbr.
birth control 计划生育;
between centers 中心距;
back course （返）回（航）程;
back-cross 回交;
例句:
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BC - Kingdoms of Upper and Lower Egypt unite.
来自BBC
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The brooch dates back to the fourth century BC.
这枚胸针的历史可以追溯到公元前4世纪。
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The island was settled in the second century BC.
来自BBC
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This play was first performed in 411 BC.
该剧于公元前411年首演。
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born circa 150 BC
生于约公元前150年
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This position is located in Vancouver, BC, Canada.
来自SA