The levels, of which there are 16, are essentially shortcuts to constrain different video components when compressing.

级别(通常有16个)本质上是快捷键，用于在压缩时限制不同的视频组件。

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Gzip Components: Gziping or compressing JS files, images, HTML documents, CSS files, etc. allows the user to download a much smaller version of a file, increasing the speed of the page load.

Gzip部件：Gziping或者压缩js文件，图片，HTML文档，CSS文档等等。用户可以下载较小的文件版本，增加网页的加载速度。

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Abstract: the spiral continuous juicer isolates the solid and liquid components from the fruit, and then squeezes the juice by the method of compressing volume.

摘要：螺旋式连续榨汁机是采用压缩体积的方式使果料的固体与液体成分分离，榨取汁液。

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