a while ago

基本解释

A while ago I had a dispiriting conversation with another eminent European scientist.
刚才，我和另一位著名的欧洲科学家进行了一次令人沮丧的谈话。
A while ago, I was working on a project which started as a normal dialog-based solution.
前一段时间我做了一个项目，最初使用普通的基于对话框的解决方案。
I beg your pardon, sir, for having disturbed you a while ago, and for again disturbing you at this moment; you must have thought me intrusive, and I will explain myself.
我来向您道歉，先生，我刚才打搅了您，现在又来打搅您，您一定觉得我这人有些不近人情吧，我得向您解释一下。

"General McChrystal and the NATO investigators should bear this fact in mind that regardless of the support to the Taliban, those killed were non-combatants and their killing was a violation of the tactical order General McChrystal issued a few while ago in order to prevent such incidents,".
And so, he was in kind of in this very minimum security and he finally just croaked a while ago.
所以就对他严加看管,前一阵子他终于死了
耶鲁公开课 - 1871年后的法国课程节选
Okay, it's from 1987, so it's from quite a while ago, but.
这是1987年上映的，所以这是部老电影。
在伦敦拍摄的电影 - SpeakingMax英语口语达人

On Iran, a while ago you said there is time and space to pursue diplomacy.
WHITEHOUSE: Press Briefing