所有的服务请求可能同步并在合理的时间范围内(比如，数秒或更少)完成。

All the service requests are probably synchronous and complete in a reasonable span of time (for example, seconds or less).

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然后其他机器就可以使用网络时间协议(ntp)来与时间服务器的时间戳进行同步。

The other machines would then use the network time protocol (NTP) to synchronize their time stamps with the time server's.

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同步交换用于预期完成时间相对较短(几秒或几分钟)的服务。

Synchronous exchange is used to invoke services which are expected to complete in a relatively short period of time — seconds or minutes.

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