The instance is a blank version of the patient information data model defined previously.
实例是前面定义的患者信息数据模型的空白版本。
I used to see "Date Taken" information for photos, but now it's blank.
我曾经见过图片中的“拍摄时间”信息，但它现在为空白。
However, it is a blank to use aviation equipments to collect flood information.
但是，在天空中使用航空器材开展防汛信息采集却是空白。
However, it is a blank to use aviation equipments to collect flood information.
但是，在天空中使用航空器材开展防汛信息采集却是空白。
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