这个论点起初看似有说服力，但包含一个根本性的缺陷。

The argument seems convincing at first, but it contains a fundamental ___flaw.

尽管有其优点，该报告还是指出了所提议计划中的几处小瑕疵。

Despite its strengths, the report highlights several minor ___flaws in the proposed plan.

这颗钻石的价值因在放大镜下可见的一个微小瑕疵而大幅降低。

The diamond's value was significantly reduced by a tiny ___flaw visible under magnification.