Definition
Referring to the total distance or time involved in traveling to a place and returning from it.
往返
The daily commute to the office and back is 20 kilometers.
每天往返办公室的路程是20公里。
We plan to cycle there and back to the lake, which should take about three hours in total.
我们计划骑自行车往返湖边，总共应该需要大约三个小时。
The total cost of the trip there and back was five hundred dollars.
往返旅行的总费用是五百美元。