选购商品 commodities purchased by choice; free choice of goods; selective purchasing 请到收银台付款 could you pay at the cashier's desk ..
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[pick out and buy;selective purchasing] 挑选购买[商品] [selected works;anthology] 选录一人或多人的著作而成的集子 .
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择优采购
The structure, selective purchasing, installation and debugging of the multiplex temperature centralized control system were introduced.
介绍了多路温度集中控制系统的结构、设备的选购及安装调试过程。
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