The intersection of the lines on the graph marks the point where we start to make a profit.图上几条线的交点就是我们的开始盈利点。Intersecting lines have one point in common.几条交叉线有一个共同交点。I would happily pay more tax to get an efficient health care system.为了建立一个更有效的医疗保健体系，我愿意多交点税。