sum: applies to the result of addition of numbers or particulars: thought of his car as more than the ~ of its parts.    (particular具体细节=detail,表示小和单个数量,强调具体,如a verbal attack that included few particulars没有具体细节的语言攻击)


amount: implies the result of combining sums, or weights or measures into a whole: the ~ of cotton raised last year.


number: suggests a countable aggregate of persons or things: a large ~ of apples.


aggregate: implies a counting or considering together of all the distinct individuals or particulars of a group or a collection: errors that are individually insignificant but in their ~ destroy confidence.


total: suggests the completeness or inclusiveness of the result and may stress magnitude in the result: counted a ~ of 328 paying customers.  (inclusive包含所有的the fully inclusive fare for the trip is RMB 52这次旅行的全部费用是52元)  (complete完全,即没有缺失，a complete success完全成功)


whole: close to total, emphasizes unity in what is summed up: wanted the individual elements to create a cohesive ~. (cohesive 1统一的，2凝聚的: 指紧密联系的整体，如例句表示统一，又如they had no group cohesiveness他们没有团队凝聚力，表示凝聚力，注意不要错写成cohensive


quantity: applies to things measured in bulk, even though they can be counted: a ~ of carrots; or to anything that is measurable in extent, duration, volume, magnitude, intensity, or value: the ~ of work performed.    (bulk指数量多重量重体积大等，如bulk of weight很重)


sum和: 表示求和的结果，把数字或具体细节相加，amount总量: 对数字重量等量度的总计(combining...into a whole)即sum的sum，number数目: 表示该集合可计数，aggregate集合: 将所有成员细节作为一个整体计算考虑，total总共: 表示完全包含所有，whole整体: 强调紧密的结合(unity)，quantity数量: 指按重量体积数量计算，或者任何范围时间体积幅度强度价值等可测量属性


记忆方法: 1) 首字母SAN AT WQ: 圣人在韦曲<==总和多    （韦曲位于西安南郊，坐落有柳青广场常宁宫等)     San是saint缩写,如旧金山san francisco，St.也是saint缩写，如圣彼得堡st petersburg

              2) 总和的意思是一个群组的全部mean all that is present in a group or a mass.首字母SAN AT WQ: 圣人在韦曲<==总和多