基本解釋[金融] 未確認信用證；[金融] 不保兌信用證詞組短語短語unconfirmed E letter of credit 未確認信用證unconfirmed U letter of credit 未確認信用證an unconfirmed letter of credit 未經(jīng)證實的謠傳unconfirmed letter of credit更多詞組專業(yè)釋義經(jīng)濟學不確認信用證非保兌信用證未確認信用證不保兌信用證