The cast did a run-through for the sound technicians.

演员们为音响技术人员做了一次演练。

27. And everything was recorded simultaneously, which, well, since the sound technicians working on films often had experience with live radio, that made sense to them.

另外，录制的时候也是（声音跟画面）同步录制，呃，因为参与电影制作的音效师经常会有电波现场演绎的经验，所以，这么做对他们来说很正常。

Which job's wages took the biggest hit in 2020. - I feel like it's a sound engineering technician, only because live events and like live performances weren't happening.

2020 年哪个工作的工资受到的打击最大。 - 我觉得它是一个健全的工程技术人员，只是因为没有发生现场活动和现场表演。