single error

例句：

1. 1. The software had a single error that caused the program to crash.
   软件有一个错误，导致程序崩溃。
2. 2.He made a single error in his report, which cost him the project.
   他在报告中犯了一个错误，这让他失去了这个项目。
3. 3.The engineer found only one error in the design, which could be easily fixed.
   工程师在设计中发现了一个错误，这个错误很容易修复。