我们年龄更大后睡眠模式有所改变。因为我们的代谢速率降低了，而且现在我们是负责警戒和保护的人了。
Our sleep patterns change when we are older, though, because that metabolic rate reduces and we are now the ones doing the alerting and protecting from dangers.
一团放射性铯137，整体以恒定的速率衰变，但是其内部单个原子的衰变是一种不可预测的随机模式。
A lump of radioactive cesium-137, for example, may decay at a steady rate overall, but individual atoms within the lump will decay in an unpredictable, random pattern.
如果您看到很多下面 类型的消息（参见清单 13），那么 NIC 就可能在与交换机协商速率/双工模式时出现了问题。
If you are seeing a lot of the following types of messages (see Listing 13), the NICs may be having trouble negotiating speed/duplex with the switch.
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