昨天我们采访了斯坦福德的几家职介所，了解他们是如何工作的。

Yesterday we visited several agencies in Stamford to find out how they work.

他们带着一套问卷去了一家短工职介所，让一组工人填写这套问卷并为其保密的。

They went to a day-labor employment agency armed with questionnaires for a sample of workers to fill out confidentially.

除此之外，还要求这些外资公司通过一个国家职介所雇佣廉价工人。——That后面我觉得是修饰WORKER的。

It also required firms to hire workers through a state employment agency that paid meagre salaries.