a run-on entry的用法和样例：
- We've had a run on jeans from China.
- The post office reported a run on the new stamps.
- The rumoris afloat that there is a run on the bank.
- Later on there'll be a run on clothes, too.
- I've got a run on my house roof.
- The rumor is afloat that there is a run on the bank.