这位钢琴家的演出完美无瑕，令全场观众着迷。

The pianist gave a ___faultless performance, captivating the entire audience.

父母应该承认自己并非完美无缺，并学会向孩子道歉。

Parents should acknowledge that they are not ___faultless and learn to apologize to their children.

在整个复杂的手术过程中，这位外科医生的技术都无懈可击。

The surgeon's technique was ___faultless throughout the complex procedure.