Within the photo node, any number of tags can describe the photograph, but in this example, we settle on date, locale, and comment.
在 photo 节点中可以使用任意多个标记来描述照片，但本例中只使用了 date、locale 和 comment。
The Modulation Transfer Function(MTF) of X-ray tube focal sPOt and its size are the main parameters, which can be used to describe the photo function of X-ray tube focal spots.
线管焦点的调制传递函数（MTF）和焦点尺寸是描述X线管焦点成像性能的主要参数。
The "selfie" is used to describe the self-taken photo, often from a smartphone.
“自拍”一词是用来描述那些自己给自己拍的相片，通常是用智能手机拍的。
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