migrant worker (who moved from a rural area of China to a city to find work)
temporary worker enlisted on a public project
Definitions (粵典–words.hk)
名詞
中國大陸户口喺農村嘅農民，離鄉到城市打工嘅勞工 migrant worker; a resident in rural mainland china that migrates to the city for work
Definitions (Wiktionary)
noun
worker, labourer, especially for a public project.
Definitions (Kaifangcidian)
（沒有對應漢語詞彙）
Definitions (HSK3.0)
HSK3 六级词汇表 #583
Examples (Tatoeba—Mandarin-English)
Mandarin
一个国家对待知识分子的态度标志着一个国家的文明程度，而一个国家对待农民工的态度则代表着一个国家的良心！
一個國家對待知識分子的態度標誌着一個國家的文明程度，而一個國家對待農民工的態度則代表着一個國家的良心！
yí gè guó jiā duì dài zhī shi fèn zǐ de tài du biāo zhì zhe yí gè guó jiā de wén míng chéng dù ， ér yí gè guó jiā duì dài nóng mín gōng de tài du zé dài biǎo zhe yí gè guó jiā de liáng xīn ！
The way a country treats its intellectuals is a sign of its civility. The way a country treats its farmers is a sign of its conscience.