In optical character recognition, a combination of peaks and smudges that may close or partially close a loop of a character thus making it unreadable. 在光學字元識別(OCR)中,亮點和黑點的一種組合,可能封閉或部分封閉字元的環形部分,因此使其無法讀出。
Wash your hands or you'll make smudges on the writing paper. 把手洗乾凈,別把寫字的紙弄髒了。