prolongation
noun /ˌprəʊlɒŋˈɡeɪʃn/
/ˌprəʊlɔːŋˈɡeɪʃn/
[uncountable, singular] (formal)- the act of making something last longer
延长;延伸 - the artificial prolongation of human life
对人类寿命的人为的延长
- the artificial prolongation of human life
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