• 基礎釋義
• 例句
• 詞組
• 同義詞
• 反義詞
• 英漢詞典釋義

• The hollow was full of trees but the higher ground was covered with grass. 凹地樹木成林, 但高處長滿青草。
• These mathematical definitions make basic landform shape concept of limit determine nat. 繼而給出了如斜坡、山、山脊、凹地、谷地、鞍部等基本地貌形態的數學定義.

• 凹地帶
  trestle

• 洼地，

• 高地，

• [āo dì]
  concave ground; depression; kar; mulde; delve; hollow