充任

He acted as secretary to the board.

他委会的秘书。

He occupies an important position in the Ministry of Education.

他在教育部要职。

A newly-devised microcomputer can act as a guide to a blind person.

一种新设计的微型计算机能够盲人的向导。

This girl acted as our guide.

这女孩我们的向导。

Then the aspiring reporter may break into newspaper work as a copyboy， running errands and helping staff reporters.

有抱负的通始可去当送稿生，替人跑腿，或正式的助手，以闯进新闻工作的圈。