Echo check

用法例句

Since traditional TCP timer is fundamentally inappropriate for ad hoc network with random abrupt round-trip time(RTT),a new TCP timing scheme based on rtt_active timer was proposed.

针对传统的TCP定时器不适用于具有动态随机变化往返时间的ad hoc网络,提出了一种基于rtt_active定时器的新的TCP定时方案。

Back and forth

来回,往返,来来往往地

shuttle train

[美]短程往返火车

One way or round way?

单程还是往返程? ?

Would you want one way or round trip?

是单程的还是往返的？

He that go to the contrary way , must go over It twice .

走错方向，徒劳往返。

The price is 20 yuan for a return ticket.

往返票价是二十元。

I'd like a round-trip ticket, please.

我要一张往返车票。

That is a return ticket.

那是一张往返车票。

The bowers where Lucy played;

露西留连往返的亭榭，

commute between London and New York

定期往返于伦敦纽约间

I'll take the round-trip ticket, please.

我要买往返的车票。

I've booked return tickets.

我订的是往返机票。

traveling between Great Britain and France.

往返于英法两国之间。

How long does it take to go there and back?

往返需要多少时间?

Can I go there and back in one day?

一天之内我能往返吗？

A: OK. Give me a round trip ticket.

甲：好，给我一张往返票。

A round trip ticket saves you aboutpercent of the fare

往返票为您节约%的票价

"Shuttle, Rotation Injection Heading Machine"

往返、旋转式注塑打头机