经济系的英文：
【经】 department of economics

Some students of the economics department had a Bull session last Sunday.
上星期天,经济系的一些学生聚集在一起漫谈

A government department or a subdivision of a department.
局司处等行政单位政府部门或其下属机构

He's the departed department leader.
他是过去的部门领导。

The bulk of the work rolls from department to department.
大量的工作从一个部门转移到另一个部门。

The accounting department is independent of all the other departments.
会计部门是独立于其它所有部门的。

depart out of this world
逝世|去世

an economical shopper;
精打细算的购物者;

economic planning
制订经济计划

Economics is the base and politics is the concentrated expression of economics
经济是基础，政治则是经济的集中表现。

economics of different sectors and economics ofspecialized fields
部门经济学和专业经济学