这些人把他们的积蓄和学到的技能又带回本国来，从而使这些发展中国家受益。

参考译文：

These people have brought back their savings and the skills /techniques/technologies learned/obtained/acquired/achieved by them to their own countries, thus benefiting these countries .

With their savings and acquired techniques brought back to their own countries, these developing countries have benefited a lot.

These developing countries have benefited/profited from the fact that these people have brought back their savings and the techniques they studied /acquired from abroad.

请问这句话怎么翻译？

参考译文(1)

These people have brought their savings and what they have learned abroad back to their own country and made these developing countries benefit a lot.

参考译文(2)

These developing counries have greatly benefited from the savings and techniques which were brought back from abroad by these people.

参考译文(3)

Theire savings and their acquired skills which they have brought back  from overseas countries  have greatly these developing countries.

参考译文(4)

These people have brought their savings and what they have learned abroad back to their own country ,making these developing countries benefit a lot.

参考译文(5)

Great benefits have been given to these developing countries after these people have brought back their savings and skills/technologies/techniques they have studied abroad to their own countries.

参考译文(6)

These developing countries profited from the fact that these people have brought back their savings and skills/technologies/techniques they have studied abroad to their own countries.