So far we have established the preliminary conclusion that the volume of employment is determined by the point of intersection of the aggregate supply function with the aggregate demand function.

至此，我们初步建立了就业量由总供给函数与总需求函数的交点决定的结论。

The old man's route being along one side of an equilateral triangle, while Jim's was along two sides of the same, the former was at the point of intersection long before Hayward.

老人的路线是沿着等边三角形的一侧，而吉姆的路线是沿着等边三角形的两侧，前者在海沃德之前很久就在交点处。