什么是 thrash?To beat with or as if with a flail, especially as a punishment. See Synonyms at beat.To swing or strike in a manner suggesting the action of a flail: The alligator thrashed its tail. To defeat utterly; vanquish.To thresh.To sail (a boat) against opposing winds or tides.To move wildly or violently: thrashed about all night. To strike or flail.To thresh.To sail against opposing tides or winds.The act or an instance of thrashing.Music See speed metal.thrash out To discuss fully.