超市              chāoshì                 supermarket

熙熙攘攘      xīxīrǎngrǎng          streams of people busily coming and going

客流量          kèliúliàng               rate of customer flow

营业额          yíngyèé                 turnover; volume of business 

双休日          shuāngxiūrì            weekend

加班              jiābān                    work overtime; work an extra shift