| 单词 | maturity | 
| 释义 | ma·tur·i·ty    (mə-tyrĭ-tē, -tr-, -chr-)n. pl.   ma·tur·i·ties  1.  The state or quality of being mature. 2.  a.  The time at which a note or bond is due. b.  The state of a note or bond being due. 3.  Geology   A stage in the development of streams or landscapes at which maximum development has been reached or at which the process of erosion is going on with maximum vigor. Maturity of a landscape continues throughout the period of maximum topographic differentiation or until about three fourths of the original mass is carried away by erosion. [Middle English maturite, from Old French, from Latin mātūritās, from mātūrus, mature; see  MATURE.]  | 
	
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