第一類永動機 [－－类－动机]

Jyutping dai6 jat1 leoi6 wing5 dung6 gei1
Pinyin dì yī lèi yǒng dòng jī

Definitions (Wiktionary)
  1. noun
    perpetual motion machine of the first kind (perpetual motion machine that produces work without the input of energy)