Without a synchronizing pulse, the receiver cannot use timing to predict when the next group will arrive.

如果没有同步脉冲的话，接收机就不能把握住时机来预计下一个数据包的到达时间。

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Hydraulic synchronizing system used in pushing huge underground culvert is a construction techniques controlled by a group of computers.

大型地下箱涵采用液压同步顶进施工方法，其技术特点是液压缸集群、计算机控制、同步累积顶进。

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Nor does empathy suggest a physiological "reason" for yawning (after all, we yawn when alone), though Dr. Provine thinks that it may be "a response to and facilitator of change in behavioral or physiological state, " maybe synchronizing a group of people about to embark on a behavioral transition.

WSJ: Matt Ridley on Why You Just Yawned | Mind & Matter