The "flywheel" battery, it is said, could power an electric car for 600 miles on a single charge.
据说，“飞轮”电池每充电一次可驱动一辆电动汽车行驶600英里。
《柯林斯英汉双解大词典》
2
Sit down to read and the flywheel of work-related thoughts keeps spinning—or else you're so exhausted that a challenging book's the last thing you need.