最終更新日：2025/11/22
Over several seasons, the poorly drained fields were salinizing, reducing crop yields and forcing farmers to seek new irrigation methods.
正解を見る
Over several seasons, the poorly drained fields were salinizing, reducing crop yields and forcing farmers to seek new irrigation methods.
音声機能が動作しない場合はこちらをご確認ください
編集履歴（0）
