s. without a flaw
a. 无瑕疵的, 无缺点的[化] 无裂纹的; 无裂缝的
1. She gave a flawless performance at the concert.
她在音乐会上的表演毫无瑕疵。
2. His handwriting is flawless and easy to read.
他的字迹工整，清晰易读。
3. The diamond was perfectly cut and looked flawless.
这颗钻石切割完美，看起来毫无瑕疵。