Yes you can! - Just hit the checkboxes right next to the relevant files/folders (or the checkbox inside the top bar) and select "download" from the top bar. We inplemented a new Multi-Download-Feature which streams your requested files to a uncompressed ZIP-archive. Please be aware that this feature is currently considered "beta".
The resulting zips cannot be opened with the native OSX-Extractor. Mac user should use an alternative unzipper like "The Unarchiver" -> Show in the App-Store