data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：changes over time
　　持续变化的data在不同情况下:
　　增加：increase / raise / rise / go up …
　　减少：decrease / grow down / drop / fall …
　　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/drop/fall/fluctuate…
　　+insignificantly/significantly/slightly/suddenly/rapidly/dramatically/sharply/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/drop/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)
　　描述稳定的data：
　　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 from (第一时间) to (第二时间) / between (第一时间) and (第二时间)
　　描述不同状态的data
　　Noun form:
　　steady drop / sharp rise peak / dramatic fall / sharp drop
　　Verbal form:
　　(to) bottom out / (to) reach the bottom / (to) increase gradually / (to) reach a plateau / (to) remain steady
　　描述the highest point以及the lowest point
　　高点极值：
　　The monthly profit / The figures / The situation …
　　+peaked in (月份/年) <准确时间点用at XXX> at XXX% / XXX(极点data)
　　或者reached a peak / a high point at XXX% / XXX(极点data)
　　低点极值：
　　XXX bottomed out / reached
　　+rock / the bottom / a low point
　　或者hit a trough
　　此外，在描述过程中还有很多的conjunctional words/sentences，最常用的固定搭配如下：
　　并列： as well as(句首/中), also, as well(句尾), either, neither, too, moreover, furthermore, in addition, additionally, besides, what's more, apart from …
　　举例： for example, for instance, to illustrate, as an illustration, in particular, particularly, especially
　　事实： as a matter of fact, in fact, actually, as long as, so long as …
　　雷同/近似：similarly, likewise(句首/尾), at the same time, equally …
　　转折： however, whereas, nevertheless, nonetheless, though, although, even though, while, yet, on the contrary, contrarily, in contrast, conversely, on the other hand, unlikely, in stead (of), in spite of, despite of …
　　原因与结果
　　1. cause-suggestion (几乎不常用)
　　since / now that …; I hope that…
　　because of/on account of/owing to/thanks to + (doing) sth, I hope that…
　　2. cause-effect (较常用)
　　XXX lead to / bring about / result in/ account for …
　　(一个句子), therefore / thus / hence / as a result / consequently / (and) so …
　　3. effect-cause (较常用)
　　XXX be caused by / result from / be the result of / be the effect of / be the consequence of …
　　(一个句子), because …
　　it is adj. that …
　　it is unimaginable that …
　　it is undeniable that …
　　it is interesting to discover that …