保证人 /bǎozhèngrén/ angolul

guarantee [guarantees]▼(person who gives such a guarantee)
noun
[UK: ˌɡæ.rən.ˈtiː] [US: ˌɡe.rən.ˈtiː]

guarantor [guarantors]▼(person or company that provides a guarantee)
noun
[UK: ˌɡæ.rən.ˈtɔː(r)] [US: ˌɡe.rən.ˈtɔːr]

sponsor [sponsors]▼(person or organisation with responsibility (especially with a religious or financial aspect))
noun
[UK: ˈspɒn.sə(r)] [US: ˈspɑːn.sər]