4go to the mat (for somebody/something)informal to do everything you can to solve a difficult problem, win an argument, support someone etc (为某人/某事)全力以赴
The mayor is willing to go to the mat on this issue.
市长决心在这件事上全力以赴。
5AMOUNTa thick mass of something such as hairs or leaves 〔头发、树叶等的〕一簇,一团 → matted
beer mat• She sat crumbling a beer mat between her fingers.• Penguin has produced a beer mat to help promote it.• The Samaritans has tried to target men by advertisements on beer mats and in changing rooms.• It was more like a saucer or a small beer mat.• My eyes glued to the beer mat I tried to take in what was being said.