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guarantee

英/ɡˌæɹɑːntˈiː/
美/ˌɡɛɹənˈti/
01n.

担保, 抵押品, 保证书

a written assurance that some product or service will be provided or will meet certain specifications; an unconditional commitment that something will happen or that something is true; a collateral agreement to answer for the debt of another in case that person defaults

02v.

保证, 担保

give surety or assume responsibility