| 释义 | 
		cir·ca AHD[sûrʹkə] D.J.[ˈsɜːkə]K.K.[ˈsɝkə]prep.(介词)abbr. ca, c., C.【缩写】- In approximately; about:近似;大约:born circa 1900.生于1900年左右
 
 - Latin circā 拉丁语 circā 
 
 - from circum [around] 源自 circum [在…附近] 
 
 - from circus [circle] * see  circle 源自 circus [环绕] * 参见 circle
 
 
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