ex为前缀的英语单词

An examination is carried out before the ion of the tube.

插入导管前先要进行检查。

On closer examination it was found that the signature was not genuine.

经过进一步认真检查发现签名是伪造的'。

All students without exception must take the English examination.

所有学生都必须参加英语考试，无一例外。

The experiments were carried out under simulated examination conditions.

试验是在模拟的情况下进行的。

Applicants are selected for jobs on the results of a competitive examination.

竞聘者按遴选考试结果择优录用。