round trip
round trip怎么读，什么意思。往返一次,起下钻一次...
【经】 往返一次, 起下钻一次
在线英汉词典
round trip的短语、例句：
round trip (a) journey to one or more places and back again, often by a different route 环程旅行（常不循原路线返回）. (b) (US) = return2 5
[attrib 作定语] a ,round-trip `ticket 一张往返票.
在线英汉词典
round trip的短语、例句：
round trip (a) journey to one or more places and back again, often by a different route 环程旅行（常不循原路线返回）. (b) (US) = return2 5
[attrib 作定语] a ,round-trip `ticket 一张往返票.
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