您还需要一个简单快速的图像查看器，现在的桌面环境通常都附带这样的图像查看器。
You'll also need a simple and fast image viewer, which is usually bundled with modern desktop environments.
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feh是一个适用于Linux的快速轻量级图像查看器。
Feh is a fast, lightweight image viewer for Linux.
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