self-activity

短语

n. 自动；自发活动

释义与例句

n.
  1. 1.

    Self-motion or the power of moving one's self or itself without foreign or external aid.

    不可数

词源

Etymology tree Proto-Indo-European *swé? Proto-Indo-European *selbʰ-der. Proto-Germanic *selbaz Old English self Old English self- Middle English self- English self- Proto-Indo-European *h₂eǵ- Proto-Indo-European *-eti Proto-Indo-European *h₂éǵeti Proto-Italic *agō Latin agō Proto-Indo-European *-wósder. Latin -īvus ▲ Ancient Greek ἐνεργητῐκός (energētĭkós)sl. Latin āctīvus Proto-Indo-European *-teh₂ Proto-Indo-European *-ts Proto-Indo-European *-teh₂ts Proto-Italic *-tāts Latin -tās Latin āctīvitāsder. Middle French activitébor. English activity English self-activity From self- + activity.

来源：wiktionary