The members creation are mainly on three aspects of class in association, presentation of ci, sight-seeing, all of which reflect different artistic characteristics.

社员创作集中在社课、赠答、游览三个方面，显示出不同的艺术特色。

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An association between two elements can be shown either as an attribute in the class or as an association to the related element.

两个元素之间的关联要么显示为这个类中的一个属性，要么显示为这个相关元素的一个结合。

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Each one-to-one association is buried as a foreign key in the table of either class.

每个一对一的关联在表中任一类中充当外键。

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The National Association for Sport and Physical Education says twenty to thirty students in a P.E.class should be the limit.

VOA: special.2009.08.06

In fall 2011, the Florida High School Athletic Association began offering a public-only Class 1A in six sports, including football, with private schools going no lower than 2A in its eight-class system.

FORBES: Class Warfare Heats Up In High School Sports

"We can change the dynamic of the discussion going on with the consumer with two phrases: We care and we're capable, " Daren Williams, an executive at the cattleman's association, told a recent MBA class in Denver.

WSJ: Beef Industry Carves a Course

According to the NFL Players Association, 23 separate agencies represented the first-round class in 2000.

FORBES: Magazine Article