[mass noun]the action of indenting or the state of being indented 缩进;呈凹陷状;呈锯齿形 paragraphs are marked off by indentation. 段落以缩进表示。 [count noun]an indentation for each change of speaker. 每换一发言人设一缩进。
a deep recess in a surface or coastline (表面或海岸线的)凹痕;凹口 the indentation between the upper lip and the nose. 上唇与鼻子间的凹痕。 ■a tooth-like notch 锯齿状凹口 the leaves are covered in indentations. 叶片表面呈锯齿状。