东部

zài dōng bù dì qū

在东部地区

in the eastern regions

zhōng guó wèi yú yà zhōu dōng bù

中国位于亚洲东部。

China is in the east of Asia.

tiě lù shǐ zhè ge guó jiā de dōng bù bù zài bì sè

铁路使这个国家的东部不再闭塞。

The railway opened up the west of the country.