perpetualKK [pɚˈpɛtʃuəl] ｜ /pɚˈpɛtʃuəl/
GEPT 中高級
C2adjective
continuing forever or indefinitely without any interruption
The perpetual motion machine is a hypothetical device that operates indefinitely without any external energy source.
永恆的；不間斷的
C2adjective
lasting or effective for an indefinitely long period of time; enduring
The sun provides us with perpetual energy.
持久的；長存的
C2adjective
occurring repeatedly; so frequent as to seem endless and uninterrupted
The perpetual noise of the traffic outside my window prevented me from getting a good night’s sleep.