a computer error的用法和样例：
- No payments were made last week because of a computer error.
- The enormous invoice turned out to be a computer error by Canada Post.
- They called it a computer error and accidents,we know,can happen in the best-regulated systems.
- If the innocent buyer points out the mistake, the checker, bagger, and manager all come together and offer the familiar explanation: "It was a computer error.
- The clerks figures up the sum on a computer.