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商務(wù)英語(yǔ)信函范文詢(xún)問(wèn)信息1.實(shí)例之一：DearMr./Ms,Wearemuchconcernedthatyoursalesinrecentmonthshavefallenconsiderably.Atfirstwethoughtthismightbeduetoaslackmarket,butonlookingintothemattermoreclosely,...