adj.很难的,很大的;
例句:
It taught me a helluva lot about myself.
这让我对自己了解了很多。
We picked a helluva of a night, from the shore I see the skyline.
我们经历一夜, 直到看见天边轮廓逐渐清晰.
It's really one helluva book I've read in years.
这真是我多年来读到的一本不得了的书.