summation

n. 总和,和,合计

sulphur, sulphur (US sulfur), sulphuretted (US sulfuretted), sulphuric (US sulfuric), sulphurous (US sulfurous), sultan, sultana, sultanate, sultrily, sultriness, sultry, sum, sum total, sum up, sum...up, summarily, summarise, summarize, summarize, summarise, summary, summer, summer pudding, summer school, summer time (Brit) (US `fast time), summer-house, summer-time, summery, summit, summon, summon up, summons, sump, sumptuous, sumptuously, sumptuousness, sun, sun-baked, sun-blind, sun-drenched, sun-glasses,