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reef (n)/riːf//riːf/a group of rocks or coral that rise to or near the oceansan hô, đá ngầm  He walked along the reef and looked at the water below. Snorkelers and divers explore the vibrant marine life around a coral reef. The ship navigated carefully to avoid the submerged reef in the shallow waters. Coral reefs play a crucial role in supporting diverse ecosystems within the ocean. Conservation efforts focus on protecting reefs from environmental threats to preserve biodiversity. Từ vựng khác:hurricane , fuel , plain , shut , task |