他好几次出现在不同的超市亲自检查价格。
He has also popped into several supermarkets to check the prices for himself.
研究目的是考查价格促销，算计性承诺和顾客忠诚之间的关系。
The purpose of this study is examining the relationships of price promotion, calculative commitment and customer loyalty.
目的探讨彩色多普勒超声对脑梗塞患者颅外段椎动脉血流的检查价值。
Objective To study the values of color Doppler ultrasonography (CDU) for the extracranial vertebral artery flow in cerebral infarction patients.
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