1.office workers 上班族

例句:Few of the office workers dared to approach the director about their working conditions.
职员中很少有人敢向主任提出工作条件方面的要求。

2.as to 至于，关于

例句:This gave me a clue as to the source of the problem.
这件事给我提供了找出问题根源的线索。

3.the ups and downs 起起落落

例句:The novel mirrors the ups and downs of the city.
这本小说反映了城市的兴衰。

4.looks at 研究

例句:He looks at all jimmy's teeth.
他检查了吉米所有的牙齿。