The network is a key aspect of virtualization and represents a first-class element of the virtualization set.

网络是虚拟化的一个关键方面，代表虚拟化设置中第一等的元素。

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A key element in the data model is the set of statistics gathered about the data contained in the database and stored in the system catalog tables.

数据模型中的关键元素是一组统计信息，该统计信息收集了有关数据库中所包含的数据和系统目录表中所存储的数据的信息。

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When the viewer presses a key, it triggers the set element, which makes the rocket visible at the bottom of the screen.

当查看者按一个键时，它会触发set元素，这使得火箭在屏幕底部可见。

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Scott's spooky lighting design is a key element of the theatrical presentation on Marsha Ginsberg's dead leaf-strewn, rundown swimming pool set.

WSJ: Review: 'Jackie' a sharp-eyed look at an icon