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1. Oxford Dictionary

   ground level

   • n.
     the level of the ground；the ground floor of a building.

   • noun: ground level, plural noun: ground levels

2. • 釋義

   n.

   名詞

   • 1. the level of the ground cut the cane down to ground level ground-level ozone
   • ▪ the ground floor of a building.
   • 2. another term for ground state