一个传输中的特定数据将随时间而有所不同，但有效性规则已事先指定。
The specific data in one transmission will vary with time, but the validity rules have been specified in advance.
当工作压力越来越大的时候，许多人会一筹莫展，而有研究表明，骑着马四处溜达一下比长时间的呆坐在椅子里有效得多。
When times get tough, many people turn serious, but some researchers believe that horsing around may be better in the long run than hunkering down.
应用拉格朗日乘数法，将空闲时间分布到数据通路的各个操作节点上，从而有效地降低了设计电路的能耗。
By means of Lagrange multiplier method, this method distributes the slack to the operator nodes in the data path, thus, efficiently reduces the energy consumption of design circuit.
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