noun 다운로드 🔗공유 마른 호수 A former lake, especially a lake that has dried and habitually remains dry, opposed to playas. Examples : "The farmer's field was a hardpan, a dried-up lake bed that was now too hard to plow easily. " 농부의 밭은 마른 호수였는데, 지금은 쉽게 갈기에는 너무 단단해진 마른 호수 바닥이었다. geology geography environment AI와 채팅어휘 게임독해 연습
noun 다운로드 🔗공유 경반층, 불투수층 A distinct layer of soil that is largely impervious to water. Examples : "After a heavy rain, the water remained pooled on the surface because a layer of hardpan prevented it from soaking into the soil. " 폭우가 내린 후, 경반층이 물이 토양으로 스며드는 것을 막아 표면에 물이 고여 있었다. geology environment agriculture AI와 채팅어휘 게임독해 연습