Many of the animals die when people harvesting other kinds of fish pull in sharks by accident.

VOA: special.2009.06.16

In fact, you'll find the probability of this happening 3% is only about 3 percent, of it happening just by accident.

实际上你会发现,出现这种情况的概率是，所以说他们的实验结果完全是偶然的。

麻省理工公开课 - 计算机科学及编程导论课程节选

And in the process of tidying it up and making it prettier, I'll often by accident find the bug.

让我的程序更漂亮些,在这个清理美化代码的过程中，我常常无意中发现我的错误。

麻省理工公开课 - 计算机科学及编程导论课程节选

Russians were awoken to the threat posed by the destruction of a hydroelectric plant last year, when a major accident at the Sayano-Shushenskaya dam in Siberia threatened the lives of millions of people downstream.

VOA: standard.2010.07.21

It used to be that it was actually the gold standard kind of came in by accident in England originally; that was in the 1600s.

过去事实上，金本位制度,起初是意外地被引进英国的；,那是在17世纪。

耶鲁公开课 - 金融市场课程节选

There's no reason why these two attributes had to be proportional, but they are proportional and they are equal by choice of units and you can ask, "Is this just an accident or is it part of a big picture?"

我们不知道这两个质量为何成比例,但它们确实成比例,而且如果选择合适的单位还会相等,你会问,"这种情况纯属偶然,还是这只是物理学大体系的冰山一角"

耶鲁公开课 - 基础物理课程节选

And we're going to start with one that you many of you, have already bumped into perhaps by accident, which are lists.

曾经遇到过的,可能是偶然遇到的类型来开始,就是数组，数组和字符串类型。

麻省理工公开课 - 计算机科学及编程导论课程节选