hewasfastasleeponthebackseat翻譯hewasfastasleeponthebackseat。他很快就在后座上睡著了。backseat指汽車后座Hesatinthebackseatofthecar.他坐在車子后面的座位上。Theyrodeinthebackseatofthebus.他們坐在公共汽車后面的座位上。Dad:Comeon,yougetthebackseat,andMomgetthefrontseat.爸爸：快點，你們兩個坐后排，媽媽坐前面。hewasfastaslee...