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在目前使用的100Mbps宽带的局域网中，双绞线的8条芯线并没有全部用上，只有1，2，3，6线有效。
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Due to global warming, thefor polar bears is shrinking, causing the number of polar bears to keep decreasing.
Even a 70% discount of the fares offered by the airlines failed topeople’s demand for domestic travels, let alone overseas trips.
His attitude towards what was happening to the boy was; it was hard to believe that he was unconcerned about the poor boy’s sufferings, whereas he would shed tears for those stray cats.
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