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A young boy takes his mother's place in a group of gemstone-based beings, and must learn to control his powers. This series is set in the fictional Beach City, where ageless alien warriors, the Crystal Gems, live in an ancient beachside temple, protecting the world from evil. They project female humanoid forms from magical gemstones that are the core of their being. The Crystal...。《中国港口》运用文献与记录相结合的叙述方式，以中华民族和世界的融合与冲突为线索，用国际化的视角，从港口历史、港口文化、港口贸易(水运)、港口科技、港口与城市等方面，重点诠释中国港口独有的文明及其令人瞩目的成就，展示我国的海洋实力与国家实力。。