casing [ˈkesɪŋ]

例句:

• The vacuum flask has a strong casing, which won't crack or chip.
  这种热水瓶瓶身坚固，不易断裂破碎。
  来自柯林斯例句
• This wire has a plastic casing.
  这种电线外包塑料.
  
• There is a window fitting in a casing.
  有一扇装在框内的窗.
  
• But BP believes it went straight up the casing.
  来自BBC
• The biggest disappointment after this tantalising spec is the casing.
  来自THETIMES
• The quality of the casing is a little harder to overlook.
  来自THETIMES