保证

guarantee; promise; secure; assure; ensure; warrant; pledge; undertake; security; assurance; commitment; guaranteed

加强

strengthen; reinforce; enhance; intensify; consolidate; fortify; boost; amplify; step up; beef up; toughen; heighten; empower; invigorate; solidify; deepen; stiffen; harden; strengthened; reinforced; enhanced; intensified; strengthening; enhancement; intensification; reinforcement

伙伴关系

partnership