cocooning [kə'ku:nɪŋ]

例句:

• This is called nesting or cocooning.
  这就是所谓的筑巢或结茧.
  
• The technique of comprehensive cocooning can keep the cocooned from rusting for 2 - 5 years.
  综合封存技术可以保证被封存件2 ～ 5年不生锈.
  
• Even a "cocooning" day is more interesting in Paris or Istanbul.
  来自WSJ