这些标记称为EXIF元数据，是为了说明照片的曝光度和光圈设定，有的相机还会显示GPS信息，当然，还有拍照的时间和日期。

These tags, called EXIF metadata, specify things like the exposure and f-stop settings, gps information if your camera has it, and, of course, the time and date the photo was taken.

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经管理人员批准，对该地点进行拍照或画一张草图，签名并注明日期。

After the permission of hotel management to take photos and draw a epure for the scene, signature and the date attaching.

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了解自己的皮肤的样子可以帮助您知道自己的皮肤的变化。有些专家说把痣拍照并标注日期便于后来对照。

Knowing what your skin looks like will help you recognize any changes. Some experts suggest taking pictures of moles and dating the images to compare over time.

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当您在航拍照片看，请注意日期。

When you look at aerial photos, note the date.

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当您在航拍照片看，请注意日期。

When you look at aerial photos, note the date.

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