| 释义 |
runby
\ ̷ ̷ˌˈrənˌbī\ noun
(plural runbys \-īz\)
Etymology: from run by, v.
1. : the clearance space between the top of the car frame and the lowest portion of the overhead work in a hoistway or elevator shaft
2. : an extra piece of track to permit a train to back past a crossover without using it |