undersurface 

  1. 名詞
底面
下側, 下面
/此名詞複數為"undersurfaces"/

    同義字詞
bottom,underbelly,underbody,underpart,underside

例句

  1. The leaf undersurface is covered with white hair.
  2. We could feel and hear ice grinding the undersurface of the boat.
  3. Letterboxes and the undersurface of toilet seats are common sites.
  4. The ribs do not extend onto the cap's undersurface in either species.
  5. Or, what in reality embroiled through from extremum to undersurface .