undoubted evidence勿庸置疑的证据
undoubted fact不容置疑的事实
undoubted a无疑的
his sincerity is undoubted他的诚意是无容置疑的
Undoubted Meeting Reduces Cost无疑会降低本钱
He produced several undoubted masterpieces他写了几本无庸置疑的杰作
his sincerity is undoubted detail他的诚意是无容置疑的
undoubted doubtless incontrovertible indubitable questionless无疑的
ADJ（形容词） You can use undoubted to emphasize that something exists or is true. 无疑的[强调]
The event was an undoubted success.
这次活动是一个无可置疑的成功。
ADV（副词） undoubtedly 无疑地
Undoubtedly, political and economic factors have played their part.
毫无疑问，政治和经济因素起了作用。