They should get out and clear space around the vehicle to prevent the possibility of carbon monoxide gas poisoning.

VOA: special.2010.01.05

I'm going to clear some space here.

我先打出些空格。

麻省理工公开课 - 计算机科学及编程导论课程节选

Today,VOA broadcasts to satellites in space that send the signal back to stations on the ground that transmit programs with a clear signal.

VOA: special.2010.12.08