Hēihé shì Zhōng-É biānjìng shàng de yí zuò chéngshì, duì'àn jiùshì Éluósī.
Heihe is a city on the China-Russia border, with Russia just across the river.
Tips
usage
中 is short for 中国 and 俄 for 俄罗斯, and the pinyin joins them with a hyphen. The pair mostly stands before a noun: 中俄边境 'the China-Russia border', 中俄贸易 'China-Russia trade'. Same pattern: 中美, 中英, 中澳.
