三日三夜应该是three days and nights还是three days and three nights?

三日三夜应该是three days and nights还是three days and three nights? His mother watched_____him for three days and three nights u the days and nights是什么意思 three days,three-days,three-days'和three-day Five days and nights ,about ( ) hours.怎么翻译?括号内填数,应该是多少? days and nights 和day and night 有什么区别 A man rode into a town on Friday.He stayed three nights and three- day,three days,three days',three day's区别? 英语翻译The days _________ ________ and the nights _________ ___ In summer,days get longer and nights get shorter. When are the days long and the nights short 英语翻译Six days and nights after the continuous snowstorm,twent