undersides

例句:

• The long - eared animals are often gray with white noses, jaws and undersides.
  这种长耳动物通常是灰色的,而鼻子 、 口和下腹是白色的.
  
• Their undersides are pale brown.
  他们的腹部羽毛是灰白棕色.
  
• Water exits plants through their stomata. Stomata are located on the undersides of plant leaves.
  水分透过位于植物叶子下侧的气孔散发出去.
  
• Organic Inspect the undersides of leaves and remove any egg clusters.
  来自BBC
• The undersides of more mature leaves will also be affected when infestations are large.
  来自BBC
• The elephants seem to be wary of getting bitten on the soft undersides of their trunks.
  来自BBC