保证效率

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

效率的英语翻译：

efficiency
【化】 coefficient of performance(COP)
【医】 efficiency
【经】 efficiency