ˌlump ˈsum ( ˌlump sum ˈpayment) ( lump, informal )
noun
[] a single payment of money 总计；一次总付的金额；一笔过的款项◆Workers can receive their vacation pay in a lump sum. 工人可得到一次总付的休假工资。◆You can take up to 25% of your pension as a tax-free lump sum. 你可以拿出 25% 的退休金作为一次性免税总付额。