guarantee
名词 guarantee:
a written assurance that some product or service will be provided or will meet certain specifications
同义词:warrant, warrantee, warranty
a pledge that something will happen or that something is true
a collateral agreement to answer for the debt of another in case that person defaults
同义词:guaranty
动词 guarantee:
give surety or assume responsibility
同义词:vouch
make certain of
同义词:ensure, insure, assure, secure
promise to do or accomplish
同义词:undertake
stand behind and guarantee the quality, accuracy, or condition of
同义词:warrant