noun🔗Share小川, 溝A very small brook; a streamlet."After the rain, tiny rills trickled down the hillside. "雨の後、小さな溝が丘を流れ落ちた。geographynatureenvironmentChat with AIVocabulary GamePractice Reading
noun🔗Share細長い溝A long, narrow depression that resembles a channel, found on the surface of various lunar and planetary bodies."The astronauts photographed the winding rills snaking across the dusty surface of the moon. "宇宙飛行士たちは、月の埃っぽい表面を横切る細長い溝が蛇行している様子を写真に収めました。astronomygeologyspacegeographyChat with AIVocabulary GamePractice Reading
