| 单词 | the Mason-Dixon Line |
| 释义 | the Mason-Dixon LineBrE /ˌmeɪsn ˈdɪksn laɪn/ NAmE /ˌmeɪsn ˈdɪksn laɪn/ noun [sing. ]the border between the US states of Maryland and Pennsylvania that is thought of as the dividing line between the south of the US and the north . In the past it formed the northern border of the states where slaves were owned 梅森–迪克森线（美国马里兰州与宾夕法尼亚州之间的分界线，为过去蓄奴州的最北边界线） |
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