a heck of a something/someone idiom
（用于强调）非常…
used for emphasis to mean "very"
It's a heck of a long way to the nearest shop from here. 从这里到最近的商店也有很长的路。
mainly US (also one heck of a sth/sb)令人惊讶的好人（或好事）
a surprisingly good person or thing
20 dollars for that is a heck of a good deal. 那只要20美元，真是好买卖。
She's one heck of a writer. 她真是一位好作家。