保证践约

【经】 seal a promise

保证的英语翻译：

guarantee; assure; certify; warrant; ensure; pledge; secure; assurance
guaranty; surety; warranty
【经】 assurance; endorsement; guarantee; guaranty; recognizance; scure
secure; security; surely

践约的英语翻译：

keep a promise
【经】 meet one's engagement