casing
英 ['keɪsɪŋ]
美['kesɪŋ]
	    - n. 套;盒;(香肠的)肠衣;包装
 - v. 把…装入箱内(case的ing形式)
 
英英释意
- 1. the housing or outer covering of something;
 - "the clock has a walnut case"
 
- 2. the outermost covering of a pneumatic tire
 
- 3. the enclosing frame around a door or window opening;
 - "the casings had rotted away and had to be replaced"