Sound is taken from the onboard microphone of the camera, and especially in comedies, laughter can often be heard during the film.

由 于声音是从摄像机自带的话筒录制，所以经常会录到观众的笑声等声音，尤其是喜剧片。

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And then comes for me the unpleasant bit when they all go off, 100 people - actors and camera people and film and sound - and I stay away.

BBC: Writer Ruth Prawer Jhabvala dies at 85