名詞 proletarian:

1. a member of the working class (not necessarily employed)
   同義詞：prole, worker

形容詞 proletarian:

1. the lowest class of citizens of ancient Rome who had no property
   同義詞：propertyless
2. belonging to or characteristic of the proletariat

1. Proletarian revolutionaries always cleave to Marxist-Leninist principles.
   無產(chǎn)階級革命者永遠(yuǎn)忠于馬列主義的原則。
2. Our friend ship is built on proletarian, internationalism.
   我們的友誼是建立在無產(chǎn)階級國際主義之上的。

pro.le.tar.i.an

adj.（形容詞）
Of, relating to, or characteristic of the proletariat.
無產(chǎn)階級的：無產(chǎn)階級的，與之有關(guān)的或其特征的
n.（名詞）
A member of the proletariat; a worker.
無產(chǎn)者：無產(chǎn)階級的一員；產(chǎn)業(yè)工人

來源：
From Latin prôlôt3rius [belonging to the lowest class of Roman citizens (viewed as contributing to the state only through having children)]
源自 拉丁語 prôlôt3rius [屬于羅馬公民中最低的階級（這種分法是通過生養(yǎng)孩子對政府做貢獻(xiàn)而看待）]
from prôlôs [offspring] * see al- 2
源自 prôlôs [子孫] *參見 al- 2

【引伸】
pro.letar.ianism
n.（名詞）