Underlying it there were other things besides just the calculation of their accident rates that had certain assumptions built in.

但是我们在这些特定假设之下,计算出来的事件概率之外,还有一些事情没有反映出来

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Besides, it's such a beautiful night.

而且，今晚夜色很美。

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So conceptually the key difference here, besides the syntax looking slightly different, it just means that if you want a chunk of code to execute no matter what initially, ; you can use the do while loop; if you want to check a condition first, you can use the while loop.

所以概念上，则关键的区别是，除了语法看起来有点不同，它的意思是如果你想要一段代码,最初无论如何都要执行，你就可以用do，while循环;,如果你想要先检查条件，你可以用while循环。

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