往返 1.(来回) go there and back; come and go; arrive and depart 往返要四个小时。it takes four hours to go there and back.2.(反复) journey to and fro 往返于京津之间 travel to and fro between beijing and tianjin; 往返奔波 ceaselessly come and go; 往返航程 round voyage; 往返贸易 countertrade; 往返时间 round-trip time; 往返运费 freight out and home
And mckinnon ' s willing to take over my shuttle flights 麦金农愿意接替我的往返飞行任务
It was seventeen years later before an airplane made a round - trip flight across the atlantic 而飞机跨越大西洋进行往返飞行则是在17年以后才实现的。
If a bird , flying at 25mph , leaves from los angeles at the same time as the train and flies back and forth between the two trains until they collide , how far will the bird have traveled 如果一只每小时飞行25英里的鸟同时离开洛杉矶,在两列火车之间往返飞行,请问当两列火车相遇时,鸟飞了多远?