a jerkwater town的用法和样例：
- a jerkwater town.
- A hopeless, jerkwater town where mustard is turned out in carload lots, in vats and tuns and barrels and pots and cute looking little jars.
- There was a steep climb on the road out of town.
- The medieval town was fortified with a high wall and a deep moat.
- People in this town know him as a lunatic.