undoubted

1. ADJ 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。

...a man of your undoubted ability. …一个拥有你这样无可置疑的能力的人。

2. undoubtedlyADV 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。