基本解釋[金融] 未確認信用証；[金融] 不保兌信用証詞組短語短語unconfirmed E letter of credit 未確認信用証unconfirmed U letter of credit 未確認信用証an unconfirmed letter of credit 未經(jīng)証實的謠傳unconfirmed letter of credit更多詞組專業(yè)釋義經(jīng)濟學不確認信用証非保兌信用証未確認信用証不保兌信用証