This is important when data is decomposed into multiple tables having foreign key relationship.
当将数据分解成多个具有外键关系的表时，这尤其重要。
First of all, note that SimpleDB allows multiple values for a single key.
首先，注意SimpleDB允许对单一键使用多个值。
While holding down the CTRL key, the user can choose multiple options in the list.
而在按住CTRL组合键时，用户可以选择列表中的多个选项。
One of globalization's key features is the ability to handle multiple languages.
全球化的一项关键特性就是处理多种语言的能力。
One of the key aspects of globalization is the ability to handle multiple languages.
全球化的重要方面之一是处理多种语言的能力。
The multiple access protocol is one of the key technologies of VSAT satellite communication network.
多址协议是VSAT卫星通信网的关键技术之一。
The first key feature is the ability to sort and filter on multiple stores.
第一项关键特性是对多种存储排序和过滤的功能。
A composite key is a key made up of multiple columns.
复合键就是由多个列组成的键。
In the process of multiple transformations, the return swap is always playing a key role.
在多次变形过程中，收益互换始终扮演着关键角色。
Select multiple items by holding down the SHIFT key while clicking them.
可以按住Shift，同时单击这些项来选择多项。
Select multiple items by holding down the SHIFT key while clicking them.
可以按住Shift，同时单击这些项来选择多项。
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