argue sb.down
驳倒
A：What do you think of the lawyer's speech?
A: 你觉得那个律师的演说怎么样?
B: He has a glib gongue.Few people can argue him down.
B：他有三寸不烂之舌，几乎没人能驳倒他。
A: Don't believe him. He's a liar.
A：别听他的，他经常撒谎。
B: We cannot expect a man like him to speak the truth.
B：我们可不能指望他这样的人说真话。