jīngguò / jǐnián / de / tǔrǎng / gǎiliáng / zhèpiàn / jítián / zhōngyú / biànchéng / le / féiwò / de / nóngtián

经过几年的土壤改良，这片瘠田终于变成了肥沃的农田。

After years of soil improvement, this barren land finally became fertile farmland.