doubtfuladj.可疑的;怀疑的;不确定的
doubtful failure可疑失效
doubtful account呆帐
doubtful accounts[经] 呆帐, 可疑帐款
doubtful silicosis可疑矽肺
doubtful operation原因不茂作,原因不明的动作
doubtful and false疑伪
doubtful prognosis预后可疑,预后难定
doubtful expression含糊的词句
doubtful distinction可疑的殊荣
doubtfulcompensation存疑赔偿