1
senescence of [sth]
此结构强调“某物的衰老过程”，senescence 后接 of 短语作后置定语。
The senescence of cells is a normal biological process.
细胞衰老是一个正常的生物学过程。
衰老；老化
senescences — plural of senescence
先理解核心含义，再看它在真实句子里的用法。
衰老；老化
the organic process of growing older and showing the effects of increasing age
The senescence of cells is a normal biological process.
细胞衰老是一个正常的生物学过程。
指逐渐变老的过程
衰老的状态或过程,尤指人类的；老年。
The state or process of ageing, especially in humans; old age.
因端粒缩短或DNA损伤过多而停止有丝分裂。
Ceasing to divide by mitosis because of shortening of telomeres or excessive DNA damage.
老年；随时间推移对大分子、细胞、组织和器官累积的损伤。
Old age; accumulated damage to macromolecules, cells, tissues and organs with the passage of time.
果实衰老,导致果实成熟。
Fruit senescence, leading to ripening of fruit.
The senescence of cells is a natural part of the aging process.
细胞的衰老是老化过程中的自然部分。
Many plants show senescence in autumn when their leaves change color.
许多植物在秋天叶子变色时表现出衰老。
Researchers hope to find a way to slow down senescence.
研究人员希望找到减缓衰老的方法。
此结构强调“某物的衰老过程”，senescence 后接 of 短语作后置定语。
The senescence of cells is a normal biological process.
细胞衰老是一个正常的生物学过程。
修饰语多为 cellular、premature 等形容词，常用于生物或医学语境。
Premature senescence can result from environmental stress.
环境压力可能导致过早衰老。
Not this
The cells senescence gradually.
Use this
The cells undergo senescence gradually.
senescence 是名词，不是动词。表示“经历衰老过程”时，需要用 undergo（或 go through）加名词，所以应说 undergo senescence。
Not this
The scientists observed that the fruit is senescence.
Use this
The scientists observed that the fruit is in senescence.
senescence 是名词，不能直接放在 be 动词后作表语形容词。表示处于衰老状态时，要用介词短语 in senescence 作表语。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
细胞衰老
Cellular senescence blocks the growth of damaged cells.
细胞衰老会阻止受损细胞生长。
叶片衰老
Leaf senescence in autumn causes leaves to turn yellow.
秋天的叶片衰老使叶子变黄。
过早衰老
Smoking is linked to premature senescence of the skin.
吸烟与皮肤过早衰老有关。
延缓衰老
Plant hormones can delay senescence.
植物激素可以延缓衰老。
生殖衰老
Reproductive senescence affects fertility in older animals.
生殖衰老会影响年老动物的生育能力。
Use senescences naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
senescence 以 sen- 开头，联想到 senior（年长者），-escence 表示“过程”；想象一位长者正慢慢衰老的过程。
语域：formal 常见场景：biology、medicine、gerontology 该词是较正式的书面或科技用语，多用于生物学、医学或老年学等专业语境；日常口语中较少用，常说 aging。选择正式语体更合适。
adolescence、incandescence、fluorescence、effervescence 与 senescence 的重读元音及后续 /ɛsəns/ 一致，构成真正的韵；而 sense、sentence 拼写相近但发音不同（/sɛns/、/ˈsɛntəns/），并非真韵。
Dictionary facts from ECDICT, WIKTIONARY.