知識(shí)貝殼
知識(shí)貝殼
所屬欄目：建筑施工英語(yǔ)
WhenOrvillewright(1871—1948)andhisbrotherWilbur(1867—1912)mademansfirstpoweredflightonDecember17,1903,atkittyHawk,NorthCarolina,theyrevolutionizedtransportation.Intheorythenewaircraftmadepossiblethemovementofmenandgoodsfromanypointonearthtoanyotherwithout ......（本文共 5667 字 ） [閱讀本文] >>