1.not convincing;

unconvincing excuses

2.having a probability to low to inspire belief

1 . 牽強

漢字：勉 ... 〖reluctant〗∶心中不愿而強為之 〖unconvincing〗∶牽強,不令人信服 〖reluctantly〗∶不心甘情愿.

2 . 講不通

unconvertible 不能變換的unconvincing講不通uncooked 未煮過的

3 . 不足以令人相信的

Export: GRE-HiFreq-DQ Lis... ... unconventional adj. 非傳統的 unconvincingadj. 不足以令人相信的 uncorrelated n. 沒有關聯的.

4 . 缺乏說服力

in summary , the arguer has used some unconvincinganecdotal evidence to try to show a direct and effect relationship between the scent in lavender flowers and a cure for insomnia .概而言之，論述者利用某些缺乏說服力的、軼事趣聞性質的證據，試圖來證明在熏衣草花香和醫治失眠癥之間存在著某種直接的因果關系。

1 . 沒有信心

主題：Not As We-Alanis Morissette ... Spat out on new terrain 在一個新天地里重生 Unsure unconvincing 沒有信心，也不足以令人相信 This faint and shaky hour 在這個虛弱、顫抖的時刻.

1 . 讓人生疑

What is interesting , however , is the unconvincing nature of his wartime recollections ., 不過有趣的是他那讓人生疑的戰時回憶.

1 . 論述缺乏可信度

These two critical weaknesses alone make the argument unconvincing ., 這二個關鍵性的弱點本身就足以使得該論述缺乏可信度.

1 . 恐怕無法達成

Negotiating with buyer as instruction however afraid unconvincing as your price compares unfavorably faith others ., 已按照指示和買方交涉 , 但貴公司價格高于其他公司 , 恐怕無法達成.