国家 + Noun
The word 国家 (guójiā) means "country" or "nation" and can also function as a modifier meaning "national" or "state-level." When used as a modifier, it precedes nouns to indicate national scope, such as 国家公园 (national park). It is one of the most common words in Chinese for referring to a nation.
每个国家都有自己独特的文化传统。
Měi gè guójiā dōu yǒu zìjǐ dútè de wénhuà chuántǒng.
Every country has its own unique cultural traditions.
这是一座国家级自然保护区。
zhè shì yī zuò guójiā jí zìrán bǎohùqū.
This is a national-level nature reserve.
他去过二十多个国家旅行。
tā qùguò èrshí duō gè guójiā lǚxíng.
He has traveled to more than twenty countries.