然而，这样的解释既不能说明这个奇怪的惯例的来源，也不能说明它流行的原因。
Such explanations, however, illuminate neither the source of this curious convention nor the reason for its popularity.
如果你不知道什么时候回来上班，那就明确说明，并解释不能确定的原因。
If you don't know when you will be back, explain this and the reason why you don't know.
当我们放上一个页面说明网站挂了并解释原因之后，收到了很多兴高采烈的用户来信。
We had lots of excited users emailing us when we had a page up saying we were down and explaining why.
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