- a state in which something moves continuously without stopping, or appears to do so永动
- We're all in a state of perpetual motion in this office (= we're always moving around or changing things).我们这个办公室里大家总在忙得团团转。🔊🔊
- Scientists have never discovered the secret of perpetual motion.科学家们从未发现永动机的秘密。
- His travel schedule keeps him in perpetual motion.他的旅行计划使他不停地到处奔波。