lining
/ˈlaɪnɪŋ; `laɪnɪŋ/ n
1
(a) [C] layer of material used to cover the inside surface of sth 衬里; 里子
a coat with a fur lining 毛皮里大衣.
(b) [U] material used for this 衬料; 内衬.
2 [U] tissue covering the inner surface of an organ of the body （器官内壁的）组织, 膜
the stomach lining 胃黏膜.
3 (idm 习语) every cloud has a silver lining => cloud1.