•They produced some rather unconvincing explanations for the system failure.关于这个系统的失灵，他们编造了一些令人难以信服的理由。

•The dialogue was unconvincing, partly because it was American actors trying to speak London English.对白听起来不真实，部分原因在于明明是美国演员，却非要说一口伦敦腔。