undoubtedly的解释ad.无疑(毕定)undoubtedly的例句Thatsortofthing,thoughitundoubtedlydescendstothelevelof"manbitesdog"journalism,isperhapsunavoidablenowadays.尽管那种东西毫无疑问已降格为诸如“人咬狗”之类的新闻写作,但在如今却是无法避免的。Histeacherstoldhimtopullhissocksup,orhe'dundoubtedlyfailhisexam.老师要他加把劲儿,不然考试准不及格.