文档介绍：词汇
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上升
上升:go up, increase, grow, rise, climb, ascend, expand, show an upward trend, gain, pick up, take off, mount
急剧上升： jump , soar, surge, escalate，rocket, swell, boom, leap, shoot up, skyrocket
缓慢上升： ease up, edge up, creep up, accrue
The smoking rate in young girls was on the rise.
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下降
下降:go down, decline, decrease, drop, fall (off), slide, slip, descend, dip, reduce, shrink, dwindle, diminish, show a downward trend, abate, slow down
急剧下降: crash, collapse, plummet, plunge, slump
缓慢下降：subside, ebb, ease down, edge down, creep down
a sharp decrease in the …
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幅度副词
幅度小
幅度大
rapidly, sharply, markedly, tremendously, immensely, significantly, substantially, noticeably, considerably, steeply, dramatically, drastically, overwhelmingly
gently, steadily, stably, subtly, slowly, moderately, slightly, modestly, marginally, minimally
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gradually, regularly, continuously, progressively, smoothly
comparatively, relatively
相应地
correspondingly, proportionately
均匀地
evenly, equally
平滑地
比较地
突然地
suddenly, abruptly
不均匀地
unevenly, unequally
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修饰名词时，幅度副词去ly变成形容词。
rise rapidly
There was a rapid rise….
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波动
fluctuate(名词:fluctuation), wave, waver, vibrate, vary, shift, swing, flutter, alternate, vacillate, undulate
rise and fall, go up and down, range between … and …
形容词： fluid, variable, volatile
The number of people using the station fluctuates.
反转：reverse
复苏：recover (from), bounce back
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稳定
remain/stay/maintain/keep stable (steady/constant/the same/balanced/unvarying)
stabilize/stand/level off(out)/even out/reach a plateau/flatten out at…
experience a stable trend, demonstrate no variation
there is hardly any/no/little change
resume/continue + 趋势
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最高点
reach/hit/attain/increase to the peak(top/the highest point/summit/climax/zenith/pinnacle/apex/vertex/culmination) at…
peak at…（此处peak 作动词）
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最低点
hit/reach/attain/decrease to the bottom (a low point/floor/base/valley/trough/nadir) at