to be common and/or of very little value

Books like this are a dime a dozen. 这样的书到处都是。

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。