Can Google Drive transfer files from Docs to Picasa?
我发现您可以使用Google Picker打开网络相册，但是您可以直接从云端硬盘传输到Picasa吗？
At the moment, we don't have a way to transfer data directly to or from Picasa without downloading a file and re-uploading it.
To download and re-upload a file, first download it from the Drive API, then upload it to Picasa using the Picasa Web Albums Data API.
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