1 sentence

1. 这里曾是一片低洼的泥涂，现在已经改造成了公园。

   zhè​lǐ céng shì yī piàn dī​wā de ní​tú, xiàn​zài yǐ​jīng gǎi​zào chéng le gōng​yuán.

   This used to be a low-lying mudflat, but it has now been transformed into a park.

   Source: Dong Chinese Dictionary