【以Therearemanyinventionsthathavecausdegreatchangesintheword.there'sashortintroductionTherearemanyinventionsthathavecausdegreatchangesintheword.there'sashortintroduction.forexample,thedigitalcamerawasinventedby开头】
以Therearemanyinventionsthathavecausdegreatchangesintheword.there'sashortintroduction
Therearemanyinventionsthathavecausdegreatchangesintheword.there'sashortintroduction.forexample,thedigitalcamerawasinventedby开头的作文已经写的不算入总字数digitalcamera1975StevenJ.SassonTakephotos