3 sentences

1. 穗港澳地区经济往来频繁。

   Suì Gǎng ào dì​qū jīng​jì wǎng​lái pín​fán.

   Economic exchanges among the Guangzhou, Hong Kong, and Macau regions are frequent.

   Source: Dong Chinese Dictionary

2. 畜牧业是该地区经济的重要支柱。

   xù​mù​yè shì gāi dì​qū jīng​jì de zhòng​yào zhī​zhù.

   Animal husbandry is an important pillar of the region's economy.

   Source: Dong Chinese Dictionary

3. 这一政策推动了该地区经济的跨越式发展。

   zhè yī zhèng​cè tuī​dòng le gāi dì​qū jīng​jì de kuà​yuè​shì fā​zhǎn.

   This policy promoted leapfrog development in the region's economy.

   Source: Dong Chinese Dictionary