Or some even included references to the speakers, such as Nathan Myhrvold's speaking style, or the one of Tim Ferriss, which might be considered a bit strenuous at times.
或者还包括给演讲人的参考， 比如内森·梅尔沃德的演讲类型， 或者Tim Ferriss的演讲 他的演讲可能有点费力。