pneumatic [nu:ˈmætɪk]

例句:

• They produce pneumatic pumps for automation equipment in factories.
  来自FORBES
• This pneumatic tool will double the speed of assembly.
  这个气动工具可以把装配速度提高一倍.
  
• Much of their study and revision was done to the thud of hammers and pneumatic drills.
  他们学习和复习时大多都伴着锤子和风钻沉闷的敲击声。
  
• Light kernels may be removed by a pneumatic or air seperator.
  轻的籽粒可以通过空气动力,即气流分选机清理出来.
  
• Pneumatic systems are inherently inefficient for many reasons.
  来自SA
• The city resembled a labyrinth of pneumatic tubes.
  来自NEWYORKER