At information exchange, human communication and the visual field extension, network show important role to teenagers.

网络在青少年信息交流、人际交往、视野拓展等方面显现出重要作用。

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In data customization aspect, there are also various degrees of flexibility for a multi-tenant application that ranges from complex schema customization to simple field extension.

在数据定制方面，多租户应用程序也有多种选择，从复杂的模式定制到简单的字段扩展，这些方法的灵活性各不相同。

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The label field in this extension is optional.

这个扩展中的标签域是可选择的。

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Michael Farrell, director of Cornell's Uihlein Sugar Maple Research and Extension Field Station, also sees a big opportunity for northeastern maple producers.

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Under the Life Extension Programs, weapons are returned from the field and aging components are refurbished or remanufactured.

CENTERFORSECURITYPOLICY: US Nuclear Stockpile

"This technology should provide an opportunity to see parts of the field even down to the leaf level, " said Phil Hamm, director of the Hermiston Agricultural Research and Extension Center at Oregon State University.

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