noun🔗Share支流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. "支流と呼ばれる小さな小川は、はるかに大きなアマゾン川に流れ込みます。geographynatureChat with AIVocabulary GamePractice Reading
noun🔗Share貢納国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. "ローマ帝国時代には、多くの征服された王国が貢納国となり、服従の証として、また保護の対価として、物資や資源をローマに送りました。politicsnationgovernmentstatehistoryChat with AIVocabulary GamePractice Reading
