a teller in a bank的用法和样例：
- She worked as a teller in a local bank.
- She worked as a teller in our bank.
- He worked as a draftsman, a bookkeeper, a bank teller and a newspaper columnist until 1898, when he was sent to prison for embezzlement (from his days as a teller in Austin).
- She's been working in a bank since leaving school.
- She worked in a bank for a while before studying law.