保证用英文怎么说

保证的英文：guaranteeensuresafeguardpledge参考例句：This food is guaranteed additive-free, ie The manufacturer officially promises that it contains no additives. 该食品保证不含添加剂。To stimulate your appetite and digestion and wish you good health are the guarantee of our restaurant.开胃消食，祝君健康——本酒家的保证。[C](fml)formal promise or guarantee,esp in writing.正式的承诺或保证(尤指书面形式)The doctors were zealous in their efforts to ensure the survival of premature babies.医生们在努力保证早产婴儿成活方面热情很高。He had promised that he would be with his sister through fair and foul.他保证不管在什么情况下都要和他妹妹在一起。