I need an official clarification about your mistake.

关于你的错误，我需要一个官方说明。

Your clarification is totally unfounded and untenable.

你的澄清完全没有事实依据，根本站不住脚。

For your special situation, we need an official clarification from the U.S. Embassy.

针对您的特殊情况，我们需要美国大使馆出具一份官方说明。

I sent a clarification message to take care of any misunderstandings.

我发了一个消息来处理澄清所有的误解。

Good point. Is it ok to ask for clarification if I missed something?

好建议。如果我遗漏了什么，可以请求进一步解释吗?

I am seeking clarification of the regulations.

我正在努力弄清楚这些规则。

The second one needs some clarification.

第二项承诺需要进行一些说明。

The White House later issued a clarification.

白宫之后又对此做出了澄清。

The clarification raised two important questions.

这次解释提到了两个重要问题。

Elaboration phase: Prototyping requirements clarification.

Elaboration阶段：原型需求澄清。