别听他的建议，他就是个只会大声嚷嚷、什么都不懂的蠢货。

Don't listen to his advice, he's just a loud ___knuckle-dragger who knows nothing.

酒吧里那几个壮汉只顾着扳手腕，活像一群头脑简单的蛮子。

The bar was crowded with ___knuckle-draggers who spent the whole night arm wrestling.