put a slur upon

• vt. 诽谤(底毁)

put a slur upon的用法和样例：

例句

用作及物动词 (vt.)

1. He claimed that the newspaper report was a libel.
   他声称报纸上的报导是一种诽谤。
2. He fought a vicious smear campaign against them.
   他开始针对他们进行恶毒的诽谤。