第一家电影放映厅有五台放映机。

The first Kinetoscope parlors contained five machines.

该组尝试用两台不同的放映机将地图投映在同一屏幕上。

The team tried projecting the maps with two different projectors onto the same screen.

即使是这样，充满噪声的放映机很快就退出了主流，而音乐继续为电影伴奏。

Even if that were the case, noisy projectors were separated from the main house pretty quickly, yet music continued to accompany film.