mature: in its basic application to living things, stresses fullness of growth and attainment of adult characteristics: ~ed nicely during her college years.    成熟stress the completion of development and the attainment of prime of life and powers强调发展完全，到达生命力量顶峰，如a writer with a mature style风格成熟的作家，如本例； 用于物体时还表示到期，如matured bonds到期债券


develop: stresses the unfolding of what is latent and the attainment of what is possible to the species and potential to the individual: a child who had not yet ~ed a cynical outlook.    (unfold展开打开摊开to open or spread out from a folded position，如he unfolded the map and laid it out on the table他展开地图放在桌上，如there was a fascinating scene unfolding before me我眼前展现出一幅迷人景象，来自fold表示折叠to bend)    latent和potential都表示潜在隐藏的implies concealed power or qualities，latent泛指，potential表示可能很快实现likely to realize soon，如latent sadism潜藏暴力倾向，如potential threat潜在威胁，如individual potential个人潜力，如latent period潜伏期


ripen: emphasizes the approach to or attainment of the peak of perfection: bided his time, waiting for his hatred to ~.   approach接近to come near to      ripe是mature的近义词，强调可以立即使用享用readiness for use or enjoyment，如the apple is ripe，如a people ripe for democracy成熟到足以实现民主的民族


age: may equal mature when applied to the young but more often it implies approach to the period of decline or decay: wine and cheese improve as they ~.  decay腐蚀衰退  decline下降  


mature成熟: 表示成长完全，具备成人特征，develop发展: 强调展开潜能(unfold展开打开摊开)，实现可能潜能 ，ripen成熟: 强调达到完美顶峰，age成熟衰老: 更多指趋向衰退下降，用于年轻时等于mature


记忆方法: 1）首字母MDRA增加1个A想成DRAMA令人兴奋的事件戏剧<==成熟

         2）成熟的意思是变得适用mean to come or cause to come to be fit for use or enjoyment.