in·den·ta·tion /ˌɪnˌdɛnˈteʃən/
 呈鋸齒形,缺刻;海岸線凹入處,缺口;(印刷或書寫中的)(行首)縮進,[行首)空格;壓痕,凹痕
 indentation
 縮進
 indentation
 內縮
 In·den·ta·tion n.
 1. The act of indenting or state of being indented.
 2. A notch or recess, in the margin or border of anything; as, the indentations of a leaf, of the coast, etc.
 3. A recess or sharp depression in any surface.
 4. Print. (a) The act of beginning a line or series of lines at a little distance within the flush line of the column or page, as in the common way of beginning the first line of a paragraph. (b) The measure of the distance; as, an indentation of one em, or of two ems.
 Hanging indentation, or Reverse indentation, indentation of all the lines of a paragraph except the first, which is a full line; also called a hanging indent.
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 indentation
      n 1: a concave cut into a surface or edge (as in a coastline)
           [syn: indenture]
      2: the formation of small pits in a surface as a consequence of
         corrosion [syn: pitting, roughness]
      3: the space left between the margin and the start of an
         indented line [syn: indent, indenture]
      4: the act of cutting into an edge with toothlike notches or
         angular incisions