Itisobviousinthegraph/tablethattherate/number/amountofYhasundergonedramaticchanges.Ithasgoneup/grown/fallen/droppedconsiderablyinrecentyears(asXvaries).Atthepointof(接近)X1,Yreachesitspeakvalueof„(多少).
Whatisthereasonforthischange?Mainlythereare„(多少)reasonsbehindthesituationreflectedinthegraphic/table.Firstofall,„(第一个原因).Moreimportantly,„(第二个原因).Mostimportantofall,„(第三个原因).
Fromtheabovediscussions,wehaveenoughreasontopredictwhatwillhappeninthenearfuture.Thetrenddescribedinthegraph/tablewillcontinueforquitealongtime(ifnecessarymeasuresarenottaken括号里的使用于那些不太好的变化趋势).