The notion of a use case transaction is such a constituent, and it is best taken to be a round trip, from the actor-initiated stimulus to the system's response.

用例业务的概念是这样一种成分，它最好与一个环形路线结合，从用户启动的刺激源到系统的反应都是如此。

youdao

As such, it is automatically kept in sync with the code and does not require any round-trip code to UML generation.

因而，它与代码自动地保持同步，而不需要任何“代码- UML生成”的双向工程。

youdao

However, with high-speed networks, such as Gigabit Ethernet and 10 Gigabit Ethernet, the round-trip time (hence retransmission timeout) is expected to be much lower.

然而，对于一些高速网络，如千兆位的以太网和万兆位的以太网，预期的往返时间(因此重新传输超时)要低得多。

youdao

The Mars Inspiration team is aiming for a January 2018 launch because it coincides with a close alignment of Mars and Earth, such that a round trip would take about a year-and-a half, or 501 days - whereas outside of this window such a trip might take two or three years .

BBC: US private sector hopes to send older couple to Mars

His longer journeys will include such distances as a 500-mile round trip to Hartlepool and more than 200 miles each way to Grimsby - both in January.

BBC: Footie fan's bike challenge

When Air Canada implemented its new pricing structure, it also eliminated many travel restrictions that passengers hated, such as requiring a Saturday-night stay and a round-trip ticket to get the lowest fare.

CNN: Pros and cons of a la carte airfare pricing