1.valid 有效的，有法律效力的； 正当的； 健全的

For foreign holidays you will need a valid passport.

出国度假需持有效护照。

2.go through （法律、合同等正式）通过； 用完； 检查； 完成

South Africa was going through a period of irreversible change.

南非正在经历一场不可逆转的变革。

3.a matter of 大约；问题；左右；一件

Jack had attended these meetings as a matter of routine for years.

数年来，杰克把参加这些会议当成是例行公事。

4.save from 挽救；保全；抢救；使免遭

Psychometric tests can save organizations from grim and costly mistakes.

心理测试能够使组织机构避免犯下损失惨重的大错。