More than five thousand high school students have been expelled for cheating.

五千多名中学生因考试作弊而被开除。

An American academic was expelled from the country yesterday.

一名美国学者昨天被逐出该国。

They were told that they should expel the refugees.

他们被告知应该逐出那些难民。

As the lungs exhale this waste, gas is expelled into the atmosphere.

当肺呼出这股废气，该气体就被排到空气中。