短语词组短语impugn uphold 赞成impugn endorse 责难impugn vindicate 责难impugn n 指责impugn - champion 支持impugn a statement 驳斥一种言论impugn a piece of evidence 翻译;怀疑证据to impugn someone 's integrity 怀疑某人不诚实 返回 impugn