adj.不足以令人相信的；难以置信的
All these theories are rather unconvincing. 所有这些理论都十分的不足以令人相信。
This kind of evidence is philosophically unconvincing. 这类证据在哲学上是不足为信的。
Tom's excuse sounds very hollow and unconvincing. 汤姆的借口听起来很空洞，难以令人信服。
