说明：  《基于内容的视频检索关键技术研究述评》讨论了视频检索中的关键技术。虽然只是综述，但却体现了对各项技术最准确地理解，很有利用价值
(" Content-based video retrieval key technologies A Review," discusses the key technologies in video retrieval. Although only review, but it reflects the most accurate understanding of the technology, great use value)