在表1中，与键(000002,contact：http,t4)关联的单元为空。
In Table 1, the cell associated with the key (000002, contact: HTTP, t4) is empty.
一个空单元没有与单元的键相关联的值。
优点包括数据表比较紧凑(没有不需要的可空字段)，数据跨三个子类的表进行分区，容易使用超类的表与其他表进行关联。
The pros include compact tables (no unnecessary nullable columns), data partitions across three subclass tables and easy association with other tables using the top super class table.
该网站的基本流程似乎颇为熟悉首页提供一个空框输入文本之后网站会提供一列关联网页。
The site's basic approach may seem familiar: a page featuring single empty box that, when text is entered, provides a list of useful web pages in response.
留个好印象：结尾后再空三行，打上“附件”(和你的简历关联一下)，你就会看上去很职业、注重细节又非常能干。
Leave a Great Impression: Three lines below the finish, type "Enclosure" (referring to your resume). You'll look professional, detail-oriented and oh-so-savvy.
留个好印象：结尾后再空三行，打上“附件”(和你的简历关联一下)，你就会看上去很职业、注重细节又非常能干。
Leave ea Great Impression: Three lines below the finish, type "Enclosure" (referring to your resume). You "ll look professional, detail-oriented and oh-so-savvy."
许多类别不包含多个实例，因此，您可以保持此属性为空，指示没有实例与此类别关联。
Many categories do not contain multiple instances, so you can leave this property empty to indicate that no instance is associated with the category.
留个好印象：结尾后再空三行，打上“附件”(和你的简历关联一下)，你就会看上去很职业、注重细节又非常能干。
Leave a Great Impression: Three lines below the finish, type "Enclosure" (referring to your resume). You'll look professional, detail-oriented and oh-so - savvy.
留个好印象：结尾后再空三行，打上附件(和你的简历关联一下)，你就会看上去很职业、注重细节又非常能干。
Leave a Great Impression: Three lines below the finish, type Enclosure (referring to your resume). You'll look professional, detail-oriented and oh-so-savvy.
留个好印象：结尾后再空三行，打上上“附件”(和你的简历关联一下)，你就会看上去很职业、注重细节又非常能干。
Leave ea Great Impression: Three lines below the finish, type "Enclosure" (referring to your resume). You'll look professional, detail-oriented and oh-so-savvy.
留个好印象：结尾后再空三行，打上上“附件”(和你的简历关联一下)，你就会看上去很职业、注重细节又非常能干。
Leave ea Great Impression: Three lines below the finish, type "Enclosure" (referring to your resume). You'll look professional, detail-oriented and oh-so-savvy.
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