juvenescence：返老还童，变年轻   

词根词缀： -juven-年轻 + -escence名词词尾

• seine
• seism
• seismic
• seismograph
• seismology
• seism-,seismo-
• seize
• seizure
• seldom
• select
• selection
• selective
• selector
• Selene
• selenium
• self
• self-
• self-congratulation
• self-defense
• self-deprecating
• self-indulgent
• selfish
• self-knowledge
• selfless
• self-love