成为当事国的英文

• become parties

• 成为:    become; turn into; prove to ...
• 当事国:    beteiligtes land /direkt betroffenes land/ein unmittelbar in etw.verwickeltes land; state of occurrence
• 第二当事国:    party of the second part
• 缔约当事国:    party to a treaty
• 所有当事国:    all the parties concerned