HSK 7-9
边疆
biānjiāng名
border area; borderland; frontier; frontier region
很多青年自愿去边疆工作。
Hěn duō qīng nián zì yuàn qù biān jiāng gōng zuò.
Many young people volunteer to work in border regions.
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Appears across levels (7-9) in the HSK 3.0 word list.