短语词组短語impugn uphold 贊成impugn endorse 責難impugn vindicate 責難impugn n 指責impugn - champion 支持impugn a statement 駁斥一種言論impugn a piece of evidence 繙譯;懷疑証據to impugn someone 's integrity 懷疑某人不誠實 返回 impugn