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五字母词根: juven
juven= 年轻
juvenile
juven
juvenile ˈcourt
juvenile deˈlinquency
juvenility
juvenescence
juvenescent
rejuvenate
五字母词根：later
later=边
lateral
unilateral
bilateral
trilateral
quadrilateral
multilateral
equilateral
五字母词根: insul
insul=island岛
insular
insulate
insulin
peninsula
