talk trash
US /tɔk træʃ/
UK /tɔk træʃ/

成语
1.
说坏话, 说大话, 挑衅
to speak badly or insultingly about someone or something, often in a boastful or provocative way
示例:
•
He always talks trash about his opponents before a game.
他总是在比赛前说对手的坏话。
•
Don't talk trash if you can't back it up with your actions.
如果你不能用行动来证明,就不要说大话。
在 Lingoland 学习这个单词