un·con·vinc·ing /ˌʌnkənˈvɪnsɪŋ◂/ adjectiveadj failing to make you believe that something is true or real 不令人信服的;难以置信的 an unconvincing smile 勉强的笑意
an unconvincing explanation 让人难以信服的解释
Some readers will find the arguments unconvincing. 一些读者会认为那些论据没有说服力。
—unconvincingly adverbadv