开疆拓土，汉语成语，拼音是kāi jiāng tuò tǔ，意思是开拓疆域，扩展领土。出自《太平天国·天青道理书》。
从那时起，想象力和技术不停地为电影业开疆拓土。
Since then imagination and technology have pushed the boundaries of film ever farther.
秦汉大一统王朝，为开疆拓土，经常大规模、频繁地对外用兵。
In order to develop their borders, the monarchs of Qin and Han Dynasties often resort to arms to external countries.
因此投资者在非洲新兴的债券市场上开疆拓土的举动是合理的。
So it will be logical for investors to widen their search to the "frontier markets" of Africa.
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