Volatility remains high, which has yielded these recent buying and selling opportunities to those following the Common Sense system.
股市震荡为遵循常识投资法的投资者带来最近的买进卖出机会，而现在震荡的可能性依然很高。
The device, a prototype of which was unveiled this week, is an emotion-sensing system designed to help investors keep a cool head when buying and selling.
刚于本周公布的这项设备的雏形，是一个情绪感知系统，旨在帮助投资方在买卖时，保持冷静。
The system has accomplished all sorts of business, such as buying, stocking, and selling, and realized the function to send data to management center.
该系统实现了连锁加油站进、销、存各种业务管理，另外还包括向总部管理中心上传数据的功能。
Firstly, through using the UML to build the use-case diagram of each model to analyse the system, it designs the data flow and the databases for the buying-stock-selling system.
首先通过对系统进行用例分析，运用UML建立起系统各模块的用例图，并对进销存系统的数据流程、数据库进行详细的分析与设计。
Firstly, through using the UML to build the use-case diagram of each model to analyse the system, it designs the data flow and the databases for the buying-stock-selling system.
首先通过对系统进行用例分析，运用UML建立起系统各模块的用例图，并对进销存系统的数据流程、数据库进行详细的分析与设计。
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