将初始状态和目标状态的木块上的数字按行优先顺序写下来变成两个整数序列。
Write down the numbers on the tiles in both the starting and goal states (0 for the missing tile) in row-major order to form two sequences of integers.
提取到与每个符合条件的行项目相关联的订单的优先级之后，计算行项目的数量，并按订单优先级和行项目的发货方式列出这些数字。
Once the order priority associated with each qualifying line item has been extracted, the line items are counted and the counts summarized by order priority and line item shipping mode.
不仅如此，贷款行严格了包括优先、次级抵押贷款债券的现行标准，使得借款人再融资更加困难。
Moreover, lenders have tightened underwriting standards across the board for both prime and subprime mortgages, making it harder for borrowers to refinance loans.
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