on a dime idiom
US informal（车辆等）能在极小的空间内（转弯）
If a vehicle, etc. can turn, stop, etc. on a dime, it can turn, etc. in a very small space.
The high-tech steering means that even huge tractors can turn on a dime. 高科技转向装置使巨大的拖拉机也可以在极小的空间内转弯。