2 sentences

1. 政府把这片区域划为经济开发区。

   zhèng​fǔ bǎ zhè piàn qū​yù huà wéi jīng​jì kāi​fā​qū.

   The government designated this area as an economic development zone.

   Source: Dong Chinese Dictionary

2. 政府在市郊建立了一个新的经济开发区。

   zhèng​fǔ zài shì​jiāo jiàn​lì le yī gè xīn de jīng​jì kāi​fā​qū.

   The government has established a new economic development zone in the suburbs.

   Source: Dong Chinese Dictionary