noun🔗Share支流， 支脉。 A natural water stream that flows into a larger river or other body of water."The small streams, called tributaries, flow into the much larger Amazon River. "那些被称作支流的小溪流汇入更大的亚马逊河。geographynatureChat with AIVocabulary GamePractice Reading
noun🔗Share朝贡国，藩属国。 A nation, state, or other entity that pays tribute."During the Roman Empire, many conquered kingdoms became tributaries, sending goods and resources back to Rome as a sign of submission and payment for protection. "在罗马帝国时期，许多被征服的王国都成了朝贡国，向罗马进贡物资，以此表示臣服并支付保护费。politicsnationgovernmentstatehistoryChat with AIVocabulary GamePractice Reading
