As with most apparent alien craft sightings, the quality of the footage and picture is poor, and the shape or size of the object is difficult to work out.

就和大多数较明显的外来飞行物目击事件一样，拍摄的视频和图像都不清晰，飞行物的形状和大小也难以辨认。

youdao

Due to these factors picture and sound quality are usually quite poor, but sometimes we're lucky, and the theater will be fairly empty and a fairly clear signal will be heard.

因为这些因素，图像和声音品质通常都很差。但有时很幸运电影院相当空，这样会录到好一些的声音。

youdao

Due to these factors picture and sound quality are usually quite poor, but sometimes we "re lucky, and the theater will be fairly empty and a fairly clear signal will be heard."

因为这些因素，图象和声音质量通常都很差。但有时很幸运电影院相当空，这样会录到好一些的声音。

youdao

Compressing too much information into one multiplex - broadcasting several "complicated" programmes at the same time, can also be a recipe for poor picture quality.

BBC: Digital technology - pros and cons