最后，土耳其内部也有一个真空。

Finally, there is a vacuum inside Turkey.

youdao

声音无法在真空中传播，而太空就是一个真空环境。

Sound can't travel through a vacuum and space is a vacuum.

youdao

我的第一个真空吸尘器，DC01型在1993年上市。

My first vacuum, DC01, went to market in 1993.

youdao

When you expand a real gas into vacuum, the temperature goes down.

当一个真实气体，向真空膨胀咱的时候温度会下降。

麻省理工公开课 - 热力学与动力学课程节选