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1、Thediagramprovidedaboveillustratesdata(collectedfromxxx)onthenumbersof题冃intheperiodbetweenxxxandxxx.Acursoryglanceisadequatetonotethatthexxxvariesovertimeandaccordingtothedifferentcategoriesincludedinthegraph,namelyxxx,xxxandxxx.(女口果单条线还需要描述高点thehighestnum
2、berofxxxatxxx8pmandxxx6pm.).ItcanalsobeobservedthatthenumberofAisconsistentlyfarlowerthanthenumberofB(一条线一直彳氐于一条线).Meanwhile,thefiguresforCaregenerallywithinarangefromXXXmilliontoXXXmillion,andusuallyfallsomewhereinthemiddlebetweentheothertwocategories;(th
3、eoneexceptionisfortheyearsaroundxxx,wherewecanobservearisetojustoverxxxmillion.)(均匀的曲线其中有一年有波动)Ascanbeseenfromtheillustration,inxxx,thefirstyearcoveredbythedata,therewere(年份则用过去式,当天事件或其他用现在时)ahighernumberofxxxintheA/relatedtoA(0.4million)thantoB(0.2million
4、),whilethelowestnumberrecordedisforC,withonlyaroundXXXmillion.Subsequently,thenumberofAincreased/decreasedsteadily/suddenlytoXXmillioninXXXX,followedbya(sharp)riseoverthenextxxyears,withanincrease/decreaseofxxmillion.Duringtheperiodfromxxxtoxxx,thenumberof
5、Afluctuated/remainedstablearoundanapproximateaverageofxxxmillionperyear.Afterwards,thexxxkeepclimbing/falling,toachieveitslowest/highestpointinxxx.(F波动可以在高点前或后).Attheendofthetimeperiod,thenumberofArecordedwasapproximatelyXXXmillion,overtwice/almostsame/twi
6、ce/triple/half/onethirdwhatitwasin1970/atthebeginningofthetimeperiod/day.(可直接用于单一趋势)TurningtothecategoryofB,itisclearfromthegraphthatfromXXXtoXXXitfollowedasimilaroveralltrendtothatofA/C(fromyearxxxtoxxx),exhibitingacontinualupward/downwardtendencyuntilrea
7、chingthehighest/lowestpointinXXX.Thiswasfollowedbyadramaticdecrease/increase,wherethenumberfell/raiseduptoXXXmillioninXXXandthenremainedstable.Insummary,betweenthefirstyear(xxx)andfinalyearcoveredbythedata(xxx),thenumberofBgrewfromXXmilliontoapproximatelyX
8、XXmillion;however,thesefiguresconcealsomebigfluctuationsovertheperiod.Finally,withregardtoC,thenumbersshowfarlessvolatilitythanthosefortheothertwocategoriesincludedinthegraph,remainingalmoststablefromXXXtoXXX