Moreover, introduce the idea of reachability matrix, by which, figure out the average transfer times and come out the arithmetic.
引入了“可达矩阵”的概念，利用可达矩阵计算出了公交线网的平均换乘次数，并给出了算法。
You should run the tests multiple times and then take the average of the transfer process to get an idea of the standard performance.
应该多次运行测试，然后求出传输过程的平均时间，从而比较准确地了解性能水平。
But a new study of remittances sent home by Ghanaian migrants suggests that on average they transfer enough over their working lives to cover the amount spent on educating them several times over.
但是一项关于加纳移民汇款的新研究显示，平均而已，他们工作生涯中寄回的这些汇款足足是当初教育花费的好几倍。
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