我们电视机上的图像因受你们真空吸尘器的干扰而不清晰了。

The picture on our TV is spoilt by interference from your vacuum cleaner.

清洁工关掉真空吸尘器。

The porter turned off the vacuum.

有些泵和所有真空吸尘器都是借吸力工作的。

Some pumps and all vacuum cleaners work by suction.

真空吸盘的垛板机

vacuum-operated sheet piler