undoubtedly
adv. 无疑，肯定
例句
Mozart's compositions are undoubtedly among the world's greatest.
莫扎特的作品无疑位列于世界上最伟大的作品之中。
《柯林斯英汉双解大词典》
Undoubtedly, political and economic factors have played their part.
毫无疑问，政治和经济因素起了作用。
Country music was undoubtedly one of the forerunners of rock and roll.
乡村音乐无疑是摇滚乐的先导之一。
《牛津词典》
