shoot his mouth off

• vi. 夸夸其谈(信口开河；吹牛；夸大)

例句

用作不及物动词 (vi.)

1. Henry bragged that his bicycle was the fastest.
   亨利吹牛说他的自行车最快。
2. He wants to outpsych you, don't listen to his bull.
   别听他吹牛，他只不过想唬住你。