形容詞 below ground:

1. under the level of the ground
   同義詞：belowground, underground
2. underneath the ground
   同義詞：belowground

1. The lowest habitable story of a building, usually below ground level.
   地下室可居住的最低的建筑物樓層，通常在地平面以下
2. The lowest sill, block, or timber supporting a building, located at or below ground level.
   底基用來支撐建筑物的最低的基木、砌塊或木料，位于地面或低于地面的
3. Their missile silos are below ground.
   他們的導彈發(fā)射井在地下。