limits line Rubicon boundary line demarcation line
They marked out the tennis court with white paint.
他们用白漆标出了网球场的界线。
—— 给力词典精选The boundaries are clearly marked off on the map.
界线在地图上区分得很清楚。
—— 给力词典精选There are no indecisive boundaries between the two opinions.
这两种意见界线分明。
—— 给力词典精选The lines are pretty blurry at this point.
界线在这个时候是很模糊的。
—— 给力词典精选The tick escaped from Tom, presently, and crossed the equator.
扁虱很快就从汤姆这边逃出去, 爬过了界线。
—— 给力词典精选