And by and large, factors that we know are required for the development of tissues, for the maintenance of tissues -- they start to decrease as we get older, while factors involved in repair, in injury and in inflammation -- they increase as we get older.
从总体上来说，这些因子， 我们已知是组织发育所需的， 维持其功能的因子—— 随着我们变老，它们开始变少， 而与修复、伤害和炎症有关的 那些因子—— 它们随着身体的衰老却在增加。