People have argued over the authenticity of them, although I think by now it is established that they are his.

虽然人们曾质疑其真假，但我想现在应该尘埃落定,确定是他亲笔所写。

耶鲁公开课 - 政治哲学导论课程节选

I'm giving him the benefit of the doubt that, that hopefully things will turn around a little bit,

在没有足够证据质疑之前，我还是信任他的。希望事情能有所好转，

有名的毕业生 - SpeakingMax英语口语达人