空跑一趟

to make a journey for nothing

empty / air / sky / in vain

to empty / vacant / unoccupied / space / leisure / free time

(of an animal) to paw (the ground)

to run / to run away / to escape / to run around (on errands etc) / (of a gas or liquid) to leak or evaporate / (verb complement) away / off

one / single / a (article) / as soon as / entire; whole; all; throughout / "one" radical in Chinese characters (Kangxi radical 1) / also pr. [yao1] for greater clarity when spelling out numbers digit by digit

old variant of 趟[tang1]

to wade / to trample / to turn the soil

classifier for times, round trips or rows / a time / a trip