unscrewing [ʌnsk'ru:ɪŋ]

例句:

• It can be removed by simply unscrewing with a large pipe wrench.
  只需用一把较大的管道扳钳旋下螺纹就可以拆卸底部塞弹簧总成.
  
• Separate the two pipes by unscrewing them.
  松开螺丝把两根管子拆开.
  
• The valve should be able to be removed by unscrewing the valve from housing.
  通过从外壳上旋下安全阀应该能够拆卸安全阀.
  
• But is the incident of the unscrewing of the cylinder releasing the Martians across the Home Counties supposed to raise a laugh?
  来自BBC
• Even at the time of his death, friends had wondered about the challenge that unscrewing a top would have posed for Lowry.
  来自NEWYORKER