Cosignatory
a. 连署的, 连名的\\nn. 连署人
✅ 同义词
📖 牛津释义
cosignatory
co-signatory, n ~ (of/to sth) person, state, etc signing jointly with others 连署者（人、 国家等）
The US and the former Soviet Union were co-signatories of/to the treaty. 美国和前苏联都是条约的签署国.
🗣️ 情景例句
Nice to meet you, Mr. Carlson.
很高兴见到你 Carlson先生。
Do you know what the population of Japan is?
你知道日本的人口是多少吗？
Yes, it is an old photo of my family.
是的，是我们家的一张老照片。