| 释义 |
sum n.总数，总和〖同〗amount；金额〖同〗amount/vi.共计〖同〗add up,amount
〖题〗The chairman find it difficult to ___ after such a wide ranging discuss. A.sum up B.summon up C.sum into D.amount to
〖解〗答案A。句意：主席觉得把这么大范围讨论之后的内容总结起来有难度。sum up 概括，总结；sum into和amount to都是总计，合计为……；sum up 鼓起勇气，唤起。
〖词组〗in sum 简言之；sum up 总结，概括 |