Latency is the amount of time (usually measured in milliseconds) that a packet of data takes to get from one point to another and then back in a round trip.

延迟是数据包从一个地点到另一个地点然后返回这一个来回所花费的时间(通常以毫秒计)。

youdao

Taking a one hour round trip out to a retail store to save $5 on printer ink just isn't a good use of your time.

为了买打印机油墨能省下五美元而跑到一家来回需要一小时的零售店，就是没有很好地利用自己的时间。

youdao

One of the few good things about a San Francisco to New York quick round trip is the time it affords one to read.

FORBES: The 1970s' Little Depression

One of the few good things about a San Francisco-to-New York 36-hour round-trip is the time it affords one to read.

FORBES: Magazine Article