Really, the only thing we need to worry about right now is which stick of dynamite has the shortest fuse.实际上，我们现在唯一需要担心的是哪种炸弹的导火线最短

worry about:担心； 烦恼

Don't worry about little things.

别为琐事烦恼。

right now:立刻；马上；就在此刻

She's out do some shopping right now.

她现在出去买此东西。

But this may be about to change.但不久将来就会被证实

be about to:刚要； 即将

As she was about to speak, I frowned her down.

她刚要开口，我就皱皱眉示意她别出声。

The situation was about to boil over.

当时的形势几乎到了紧急关头。