a sales force的用法和样例：
- Build a sales force with high productivity.
- A sales force that outdistanced its competitors in volume sold.
- We have a sales force at present of twenty-four salesmen of the road, each with his own territory.
- The fourth type is a sales force, products produced can be sold, salespeople management is very important.
- The company owns a fleet of car for its sale force to use.
- Management of a sales force II.