natural aging短语¹⁸⁰⁰⁹⁸⁺¹ 基本例句 天然陈化,自然老熟 These results suggest that the alterations of learning and memory behavior are closely associated with that of synaptic structural parameters of brain in natural aging mice. 结果提示，衰老过程中，小鼠学习记忆行为与其脑内突触结构参数变化密切相关。 cnki