unobstructed [ˌʌnəb'strʌktɪd]

例句:

• Pressure and flow pulses may be used to keep the tubes unobstructed.
  可用压力和流动脉冲使管子畅通.
  来自辞典例句
• Lay them on their side and ensure the airway is unobstructed.
  让他们侧躺着,并确保呼吸道畅通.
  
• The sun rose presently and sent its unobstructed splendors over the land.
  没多大工夫,太阳就出来了,毫无阻碍,把它的光华异彩散布在大地之上.
  
• The eye having an unobstructed view through the hole.
  来自S. Parkinson
• Unobstructed, it could travel a hundred and ninety feet.
  来自NEWYORKER
• Sun pours unobstructed through the curtainless windows.
  来自NEWYORKER