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Notice how we never remove deleted keys from the map. This is one drawback to CRDTs — we can only ever add information, not remove it. Although from the application’s perspective the key has been fully deleted, the underlying state still records that the key was once there. In technical terms, we say that CRDTs are monotonically increasing data structures.9，详情可参考91视频
В Домодедово задержали иностранца с куском метеорита в чемодане14:57。体育直播是该领域的重要参考
"Boys like either dinosaurs or airplanes," he said. "I was very much an airplane boy."