indentation [ˌɪndɛnˈteʃən]

例句:

• A faint fetching indentation in her left nostril which intrigued me.
  来自H. Jacobson
• The operation was successful. The cheek indentation was now just barely noticeable.
  手术很成功, 左边脸上原来那块凹处简直看不见了.
  
• Indentation methods of hardness testing comprise two principal groups.
  压痕法测定硬度包括两大类.
  
• In OCR, an indentation in a stroke.
  使用光符阅读器(OCR)时, 笔划上的弯钩.
  
• Use a spoon to make a little indentation in the top of each one.
  来自THETIMES
• This large indentation cuts well into the land area of the Isthmus of Panama.
  来自UNESCO