I'll be back in an instant.

我马上就回来。

《牛津词典》

The boys forgot all their fears, all their miseries in an instant.

孩子们在一瞬间忘记了他们所有的恐惧，所有的痛苦。

youdao

He was all attention in an instant.

他立刻全神贯注地听着。

youdao

Professor Johnson suspects a strong link between the rise of instant and casual communication online and an increase in writing mistakes.

VOA: special.2010.01.28

So in this case, the communication worked but am I right in thinking that the communication isn't such an instant solution as it was in the game we saw last time?

在这个博弈中,交流起到了作用,但是能说这和上一讲的博弈一样吗,交流并没能直接给出解决的方案

耶鲁公开课 - 博弈论课程节选

And I'm very interested in what happened in the French suburbs two years ago; in fact, I wrote an instant article on it for an encyclopedia because some of the work I'd earlier done was about why French suburbs and European suburbs are different than American suburbs.

我对两年前,在法国郊区的事很感兴趣,其实我当时就给一个百科全书,写了一篇文章,因为我以前研究过,为什么法国和欧洲的郊区,与美国郊区有这么大的差别

耶鲁公开课 - 1871年后的法国课程节选

For pork, baby back ribs take up marinade very well and cook in an instant.

NPR: Dinner's Secret Weapon: The Make-Ahead Marinade

He's not scared of making a mistake or of changing his mind in an instant.

WSJ: Alex Ferguson Exit Creates a Management Dilemma at Manchester United

People piled into a small car, and in an instant the house was empty and still.

NEWYORKER: No Secrets