这完全是一桩偶然事故。

It was an accident pure and simple.

有一些证据证明，缅因号爆炸是由于该军舰燃料箱的一次偶然事故引起的。

There was some evidence the explosion was caused by an accident in the ship's fuel tanks. Yet some people in the United States blamed Spain anyway.

医检者发现死因是由于药物的混合导致的偶然事故.

A medical examiner found that the death was accidental caused by a mixture of medicines.

由此我们认识到，我们可以通过一系列偶然事故或反复试验摸索建立一个功能完备的生态系统。

What it tells us is that we can build a fully functioning ecosystem through a series of chance accidents or trial and error.

在许多工业用的微计算机中，将程序存入只读存储器可以保证它不受到偶然事故的影响或者丢失。

In many industrial microcomputer applications, programs are held in read-only memory to ensure that the program is never accidentally changed or lost.

作为电力系统安全分析中的重要组成部分，偶然事故的选择由于在分析过程中加入了对事故发生率的考虑而变得更具有合理性。

As an essential part in the power system security analysis, the whole process of contingency selection becomes more sensible by taking the probability aspect into consideration.