These film studios, or film companies, used certain machines and equipment that attempted to match the sound you heard with the actors talking in the movie.

这些电影制片厂或电影公司使用某些机器和设备，试图将您听到的声音与电影中演员的谈话相匹配。

While Bell was teaching, he got interested in researching new technology – that is, new ways of doing things with machines and equipment by applying his scientific knowledge to the world of technology.

在贝尔教学期间， 他对研究新技术产生了兴趣——也就是说，通过将他的科学知识应用于技术世界， 用机器和设备做事的新方法。