“未被承认的”常见英文表达有 unrecognized、unacknowledged 或 unrecognized by（需结合具体语境补充完整对象），以下为你详细介绍：
含义：指没有被正式承认、认可或识别，强调在官方、法律或普遍认知层面缺乏承认。
例句：
This small country has been unrecognized by many major powers for a long time.（这个小国长期以来一直未被许多大国承认。）
Her talent went unrecognized for years until she finally got her big break.（多年来她的才能一直未被认可，直到她终于迎来了重大机遇。）
含义：侧重于表示没有得到应有的承认、认可或感谢，更强调主观上没有被注意到或给予应有的重视。
例句：
His contributions to the project were unacknowledged by the team leader.（他对这个项目的贡献未得到团队领导的认可。）
She felt frustrated because her hard work remained unacknowledged.（她感到很沮丧，因为她的辛勤工作没有得到认可。）
含义：这种表达更具体地指出未被哪个特定主体承认，适用于需要明确指出承认方的语境。
例句：
The new political party is still unrecognized by the government.（这个新的政党仍未得到政府的承认。）
His academic achievements are unrecognized by many universities in the country.（他的学术成就未得到该国许多大学的认可。）