这里在讲无声电影过渡到有声电影的曲折历史,专家认为有声技术的缺陷还是太多,所以认为有声电影只会是昙花一现。To be sure, experts' evaluation of the technical flaws in sound experiments was not so far off the mark, yet they neglected to take into account important new forces(指一些电信行业的新技术) in the motion picture field that, in a sense, would not take no for an answer.
还是不太明白这个take no for an answer,和前面怎么联系起来:“专家认为技术还有缺陷,但是他们没有考虑一些电影领域的新力量,从某种程度来说,???”后面怎么理解呢?