日期在某一个时间段固定不变：fixed in time 在一系列的时间段中转变：change over time 持续变化的data 在不同情况下： 增加：increase, rise, grow, go up, appreciate.. 减少：decrease, fall, 0drop, go down, decline,. 波动：fluctuate/ rebound/ undulate/ wave.. 稳定：remain stable/ stabilize/ level off.. 最常用的两种表达法 动词 副词形式(Verb Adverb form) 形容词 名词形式(Adjective Noun form) 1、Verb Adverb form The number of XXX increase/ jump/ rise/ decrease/ 0drop/ fall/ fluctuate ... insignificantly/ significantly/ slightly/ suddenly/ rapidly/ dramatically/ sharply/ steeply/ steeply/ steadily/ gradually/ slowly ... from (第一时间) to (第二时间) / between (第一时间) and (第二时间) 2、Adjective Noun form There was a (very) sudden/ rapid/ dramatic/ significant/ sharp/ steep/ steady/ gradual/ slow/ slight increase/ jump/ rise/ decrease/ 0drop/ fall/ fluctuation (注意：上述很多词不可用于修饰fluctuation) in the number of XXX from (第一时间) to (第二时间) / between (第一时间) and (第二时间) 3、描述稳定的日期： The number of XXX remained steady/ stable from (第一时间) to (第二时间) / between (第一时间) and (第二时间) The number of XXX stayed the same from (第一时间) to (第二时间) / between (第一时间) and (第二时间) There was little change/ hardly any change/ no change in the number of XXX from (第一时间) to (第二时间) / between (第一时间) and (第二时间) 4、描述高点值以及低点值 高点值： The monthly profit/ The figures/ The situation ... peaked in (月份/年)