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汉语拼音：shuāi lǎo

生物体或生物体的一部分随年龄增长而出现衰退现象，伴随功能下降，对环境的应激能力减弱。

1. 年迈体衰，精力不济。

   《史记·货殖列传》：“﹝ 陶朱公 ﹞后年衰老而听子孙，子孙脩业而息之，遂至巨万。” 明 刘基 《题老翁骑牛图》诗：“勿言衰老筋力薄，有牛可放殊不恶。” 叶圣陶 《未厌集·夜》：“从她那动作的滞钝以及步履的沉重，又见得她确实有点衰老了。”

2. 指年迈体衰精力不济的人。

   《礼记·月令》：“﹝仲秋之月﹞是月也，养衰老，授几杖，行糜粥饮食。” 唐 张乔 《赠头陀僧》诗：“如今竹院藏衰老，一点寒灯弟子烧。” 清 严有禧 《漱华随笔·宋太宗》：“寒暑迭变，不觉渐成衰老。”

3. 犹衰败。

   晋 干宝 《搜神记》卷十八：“ 魏郡 张奋 者，家本巨富，忽衰老财散，遂卖宅与 程应 。”

• But instead of being dismayed I watched this process with the same sort of interest I might have taken in the reading of a book.

  我倒并没有被这一切吓倒，相反，我注意看那衰老如何在我的颜面上肆意践踏，就好象我很有兴趣读一本书一样。

• which may condition his return to earth, such a monk gives up the here and the beyond, just as a serpent sheds its worn-out skin.

  他没有那些导致重返这世的恐惧，这样的比丘抛弃此岸与彼岸，犹如蛇蜕去了衰老的皮。

• 'That said, many men lose around half their sense of smell by the age of 80 simply as a function of age. Women tend to retain it. '

  还有一说，许多男性在80岁的时候仅仅因为衰老而丧失了将近一半的嗅觉能力，而女性则不然。

• Did not you hear him complain of the rheumatism? and is not that the commonest infirmity of declining life?

  你没听他说有风湿病吗？难道这不是最常见的衰老症？

• The story starts with an observation, made a few years ago, that senescent cells often produce a molecule called P16INK4A.

  故事还得从几年前的一项实验开始讲起，他们观察到衰老的细胞通常会产生一种叫P16INK4A的分子。

• To explore the secret of a woman not old, you have to understand the cause women aging problem.

  要探讨女人不老的秘诀，就得了解会导致女人衰老的问题所在。

• hate-free he knows: "This is all unreal, " such a monk gives up the here and the beyond, just as a serpent sheds its worn-out skin.

  他即不往前赶，也不往后退；他知道一切虚妄而摆脱忿怒，这样的比丘抛弃此岸与彼岸，犹如蛇蜕去衰老的皮。

• which cause his bondage to existence, such a monk gives up the here and the beyond, just as a serpent sheds its worn-out skin.

  他没有那些导致执着生存的欲念，这样的比丘抛弃此岸与彼岸，犹如蛇蜕去了衰老的皮。

• The team has not yet identified the rejuvenating factor, but they have found a blood-borne compound that seems to promote brain aging.

  他们还没有确定重新变年轻的因素，但是他们发现了一种血液中的化合物似乎会促进大脑衰老。