簽署 angolul

sign [signed, signing, signs]▼(to make (a document) official by writing one's signature)
verb
[UK: saɪn] [US: ˈsaɪn]

signatory [signatories]▼(one who signs or signed)
noun
[UK: ˈsɪɡ.nət.r̩i] [US: ˈsɪɡ.nə.ˌtɔː.ri]