协议

terminate a betrothal by agreement

agree to establish friendly relations (between/with)

at/on the expiry of an agreement

by/under an agreement

Internet Protocol (IP)

diplomatic treaty

verbal/written agreement

prenuptial agreement

life of an agreement

committed investment volume; investment commitment

articles/terms of an agreement

agreement price

observe/respect an agreement

violate an agreement

tear up an agreement

sign an agreement

draw up/draft a treaty

violate/break/undermine an agreement

terminate a treaty

annul/denounce/cancel an agreement

make/establish an agreement (with)

come to/arrive at/enter into an agreement; reach/conclude an agreement; reach an accord

communications protocol

protocol standard