柯林斯词典flywheel /ˈflaɪˌwiːl/ (flywheels) 1. N-COUNT A flywheel is a heavy wheel that is part of some engines. It regulates the engine's rotation, making it operate at a steady speed. 调速轮 返回 flywheel剑桥词典a heavy wheel in a machine that helps the machine to work at a regular speed 飞轮；惯性轮 返回 flywheel