cladding

n [U] protective covering applied to the surface of a material or the outside walls of a building 覆面（施加於材料表面或建筑物外壁的保护层）.

civil rights, civil servant, civil war, civilian, civilisation, civilise, civilised, civility, civilization, civilization, civilisation, civilize, civilize, civilise, civilized, civilized, -ised, civilly, civvies (also civies), Civvy Street, cl, clack, clad, claim, claimant, clairvoyance, clairvoyant, clam, clambake, clamber, clammily, clamminess, clammy, clamor, clamorous, clamour (US clamor), clamp, clamp-down, clan, clandestine, clang, clanger, clangorous,