| 词汇 | senescent |
| 释义 | senescent adjective biology specializeduk /sɪˈnes.ənt/ us /sɪˈnes.ənt/ becoming old, and therefore in less good condition and less able to function well: 衰老的 When the cell can't divide any more, it becomes senescent, or terminally old.当细胞不能再分裂后，就会衰老。 Disease is favoured by wet and damp conditions and is found most commonly on mature or senescent leaves. 疾病容易在潮湿的条件下滋生，最常发生在成熟或衰老的叶子上。 See senescence Numbers of senescent cells in baboons rose rapidly with age. These cells can produce new renal cells to replace the senescent and dead cells. Senescent cells are metabolically active but lack the capacity to replicate. Animal & plant biology - general words abiotic anatomic anatomical anatomically correct anti-Darwinian biologist biophysics Darwinist entomological entomologist entomology eukaryote experiment station naturalist organically overstimulate overstimulated overstimulation photosynthetically survival of the fittest Examples of senescentsenescent A tree was labelled deciduous if it lost almost all the leaves and the remaining leaves were senescent. For the common leaves experiment, senescent leaves from one site (early successional forest) were set out to decompose in each site. Green leaves enhance the growth and development of a stream macroinvertebrate shredder when senescent leaves are available. This is mainly because of the lack of reliable markers for the identification of senescent cells. It goes without saying that when plasmid transfer rates overshadow plasmidinduced senescence death, the senescent type can invade. If this was not possible because the deciduous period had begun, measurements were made on senescent leaves. The sole exception to this practice was the youngest son, who was destined to replace his senescent father. Only the senescent or opened fruits (with dispersed seeds) were taken, to avoid counting them again in the subsequent survey. In the single-hatched area the senescent fungal type can build up a population in an environment where the non-senescent type is not present. The final state of the system will thus be a fungal population consisting of senescent fungus only. In this situation, however, the senescent would finally drive the nonsenescent type to extinction, again leaving the question of coexistence unanswered. Senescent or heavily damaged leaves (mechanical or fungal) were excluded. This term is multiplied with the average lifetime of a senescent biomass unit. A distinction between healthy, activated microglia and dysfunctional, senescent cells is crucial when considering future approaches to maintain brain health and treat neurodegenerative disease. The sites selected in our study minimize variation in climate, but both chemistry of senescent leaves and nutrient availability change among forests as discussed above. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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