noun ダウンロード 🔗共有 乾燥した湖 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. " 農家の畑は乾燥した湖で、今は簡単に耕すには硬すぎる乾燥した湖底でした。 geology geography environment AIとチャット語彙ゲーム読解練習
noun ダウンロード 🔗共有 硬盤層, 難透水層 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. " 大雨の後、硬盤層が土壌への浸透を防いだため、水は表面に溜まったままだった。 geology environment agriculture AIとチャット語彙ゲーム読解練習