#酷艾英语早起团[超话]# When a whole system is composed of a number of subsystems, the one that tends to dominate is the least stable.·William Ross Ashby http://t.cn/AXSqNgvd
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#酷艾英语早起团[超话]# When a whole system is composed of a number of subsystems, the one that tends to dominate is the least stable.·William Ross Ashby http://t.cn/AXSqNgvd