2 sentences

1. 骆驼队在沙漠中发现了一片绿洲。

   luò​tuó​duì zài shā​mò zhōng fā​xiàn le yī piàn lǜ​zhōu.

   The camel caravan discovered an oasis in the desert.

   Source: Dong Chinese Dictionary

2. 经过多年的治理，这片荒地已经变为了绿洲。

   jīng​guò duō nián de zhì​lǐ, zhè piàn huāng​dì yǐ​jīng biàn​wéi le lǜ​zhōu.

   After years of cultivation, this wasteland has been transformed into an oasis.

   Source: Dong Chinese Dictionary