Most devices used for home heating have a way to expel the gas from the home.

VOA: special.2010.02.02

That means that he has to expel from his system not just Homer, not just Virgil and Dante, but also his better teacher, Edmund Spenser.

这意味着他不得不从那个体系中脱离出来，不仅是荷马，维吉尔和但丁，还有他的良师埃蒙德·斯潘塞。

耶鲁公开课 - 弥尔顿课程节选

Some medicines,like Prussian blue pills, can help expel radioactive elements from the body.

VOA: special.2011.03.30

For nearly two years, al-Shabab spearheaded efforts to expel Ethiopian troops from Somalia.

VOA: standard.2009.08.21