doubtful accounts
[经] 呆帐, 可疑帐款
doubtful assets
[经] 可疑资产
doubtful bill receivable
[经] 应收未决票据
doubtful debts
[经] 可疑债券
doubtful notes and accounts
[经] 呆帐
doubtful word
[计] 有疑问的字
doubtfully
adv. 含糊地;怀疑地
doubtfulness
n. doubtful(不大可能的)的变形