imperfections
An imperfection in someone or something is a fault, weakness, or undesirable feature that they have.
flaw , failing
He concedes that there are imperfections in the program.
他承认该程序中有缺点。
An imperfection in something is a small mark or damaged area that may spoil its appearance.
flaw , blemish
Optical scanners ensure that imperfections in the cloth are located and removed.
光电扫描器能确保找出并去除布料上的瑕疵。