sb/sth has to do sth formal used to say someonehas not done something, or that something has not happened when you think it should already have been done or have happened [正式] 某人尚未做某事 / 某事尚未发生（表示认为该做而未做或该发生而未发生）：I have yet to hear Ray's version of what happened. 我还没有听过雷对所发生的事的说法。/ The bank has yet to respond to our letter. 银行尚未给我们回信。（摘自《朗文当代高级英语辞典》第5版 yet 词条）

    所以，《新牛津英语词典》英汉双解版本中的中文翻译是正确的。原句中的 to be convinced 是动词convince的不定式被动式，意思是“被说服”。