英文: I shall doubtless see you tomorrow.
中文: 我大概明天会见到你。英文: Doubtless,people pay increasingly attention to health.
中文: 毫无疑问,人们越来越重视身体健康。英文: It was doubtless his own fault.
中文: 那肯定是他自己的过错。英文: It will doubtless rain on sports day.
中文: 开运动会那天多半会下雨。英文: Doubtless he'll be bringing his guitar, as usual.
中文: 他很可能跟平常一样会带吉他来.