[mass noun]the action or result of spilling over or spreading into another area 溢洒;溅出 ■(Brit.)people or things that spill over or are in excess, especially the surplus population moving or forced to move from an overcrowded to a less heavily populated area (英)溢出物;过剩人口(尤指向人口较少地区迁移的过剩人口)