to eat something very quickly in a way that people think is greedy

He snarfed down the whole cake. 他狼吞虎咽地把整个蛋糕都吃了。

to take something without permission

I snarfed the book off the table when he wasn't looking. 我在他没有看见的时候私自拿走了那本书。

to use a computer document or file without getting the writer's permission

He hacked into the computer system and snarfed some images. 他用黑客方法攻入电脑系统，盗取了一些照片。