If you describe something such as an argument or explanation as unconvincing, you find it difficult to believe because it does not seem real.
Mr Patel phoned the university for an explanation, and he was given the usual unconvincing excuses.
帕特尔先生给那所大学打电话要求解释,得到的只是贯用的难以令人信服的托词。
If you describe a story or a character in a story as unconvincing, you think they do not seem likely or real.
an unconvincing love story.
一个不大可信的爱情故事。