3. South of the line, slavery was legal. 分界线以南,奴隶制是合法的。
英英解释
n.
1. the region of the United States lying south of the Mason-Dixon line
2. the southern states that seceded from the United States in 1861
3. the cardinal compass point that is at 180 degrees
4. any region lying in or toward the south adj.
1. situated in or facing or moving toward or coming from the south
2. in a southern direction