Politeness is the basic norm of behavior in social life .
文明礼貌是社会生活中最基本的行为准则。
Teaching principle is a basic norm that must be followed during teaching work.
教学原则是教学工作应当遵循的基本规范。
Fair competition and fair deal are the basic norm of behavior in security market.
公平竞争和公平交易是证券市场的基本行为准则。
Fair competition and fair deal are the basic norm of behavior in security market.
公平竞争和公平交易是证券市场的基本行为准则。
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