Most archaeological sites have been located by means of careful searching, while many others have been discovered by accident.

大多数的考古遗址都是通过仔细的搜寻定位到的，也有许多是偶然发现的。

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It was hard to know whether it happened by accident or by design.

很难知道这是偶然发生还是有意为之。

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The word "serendipity" was coined by Horace Walpole in an 1854 letter, from a tale of three princes who "were always making discoveries, by accident, of things they were not in search of".

“Serendipity”这个词，是在1854年由霍勒斯·沃波尔在一封信中创造的，这个词源于一个关于三个王子的故事，他们“总是意外地发现那些他们无意寻找的东西”。

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Still,many people argue that his talent should be recognized because ten national coaching victories do not happen by accident.

VOA: special.2009.07.10

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

Whether by design or by accident, Santorum is capitalizing on our collective exhaustion from living in an ever-changing technologically-mediated future.

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