1、conviction

坚定的信念(或主张)

It is our firm conviction that a step forward has been taken.

我们坚信已经向前迈进了一步。

Their religious convictions prevented them from taking up arms.

由于宗教信仰的原因，他们不会拿起武器进行反抗。

定罪;判罪

He will appeal against his conviction.

他会对判决提起上诉。

The man was known to the police because of previous convictions.

因为有犯罪前科，警察们都认识这个人。

令人信服;有说服力

Nor did his denial carry conviction.

他的否认也没有说服力。

2、expel

开除;将…除名

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

5,000多名中学生因为作弊被开除。

a boy expelled from school for making death threats to his teacher.

因为威胁要杀死老师而被学校开除的男孩

逐出;驱逐

An American academic was expelled from the country yesterday.

昨天一位美国学者被逐出该国。

They were told at first that they should simply expel the refugees.

一开始有人告诉他们应该直接将那些难民驱逐出境。