When methods return error values, every method call is surrounded by error-handling code.

在方法返回错误值时，每一个方法调用都要包含错误处理代码。

youdao

The buffer is initialized to contain dots at startup, but they are replaced by error messages as they are generated.

在启动时，缓冲区被初始化为包含点号，但是在出现错误时就被错误信息替代。

youdao

Children learn to use computer programs by trial and error.

儿童通过反复摸索才学会运用计算机程序。

《牛津词典》

In just a moment the hearts are gonna start flowing from bottom to top and the cookies are gonna start moving left and right and they seem to be somewhat synchronized with the music, perhaps based on trial and error by the student who implemented this one.

刚刚那一刻，那些爱心们从底部上浮到顶部,饼干人则向左向右移动,它们似乎都随着音乐的律动而变化着，也许这是那个制作该动画的同学,不断尝试的结果。

哈佛公开课 - 计算机科学课程节选

What do you think the error is going to be by failing to recognize that at the end of 6 times 10 to the 23rd I have over-counted some energy?

你们可能会发现，这将会有误差,在6乘以10的23次方的末端,我多余地引入了一些能量？

麻省理工公开课 - 固态化学导论课程节选

By the way, here's where the average error is in this particular study.

顺便一提,这是这个实验的平均误差值

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Supporters say driverless cars will be safer than vehicles driven by error-prone humans.

FORBES: Driverless Cars: Coming to a Road Near You?

For technology to advance, the legal and regulatory system will need to accept that driverless cars sound risky only compared with cars driven by error-prone humans.

WSJ: Crovitz: The Car of the Future Will Drive You

In fact, pilot error is the leading cause of commercial airline accidents, with close to 80% percent of accidents caused by pilot error, according to Boeing.

BBC: How human error can cause a plane crash