单词：round-trip
round-trip的用法和样例：
词汇搭配
- round-trip ticket往返票
- round trip echoes往复回波
- round-trip lease往返租赁
- round trip delay time环程延迟时间...
- round trip propagation time往返传播时间...
- round trip cycle往返周期,往返行程时...
- round trip delay往返行程时延...
- round trip transmission delay往返传输时延...
- round trip往返旅行
- round trip lease往返程租赁
- echo round trip delay回声往返时延...
- round trip echo多次反射回波...
- round trip transmission[计] 往返传输...
- round-trip fare周游票价; 来回票价...
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