求翻译：发展中国家发展对外贸易导致外汇收入增加和外国先进技术的引进，它在弥补这些国家资本短缺、促进它们的技术进步中起着重要的作用。是什么意思？

Development of foreign trade in developing countries led to increased foreign exchange earnings and the introduction of foreign advanced technology, it make up for the shortage of capital in these countries to promote their technical progress plays an important role.

Developing countries led to development of foreign trade increased foreign exchange earnings and foreign advanced technology, it is making up these national capital shortage, promotion of their technological advances play an important role.

The developing nation development foreign trade causes the foreign exchange earnings increase and the foreign vanguard technology introduction, it in makes up these national capital short, promotes in their technology advancement to play the vital role.

The development of foreign trade of developing countries leads to increased foreign exchange earnings and the introduction of foreign advanced technology, which make up for the shortage of capital from these countries, to promote their technology plays an important role in the progress.

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