tā kàn zhe chuāng wài de fáng zi hé shù màn màn de wǎng hòu tuì, tiě lù liǎng biān shì dà piàn lǜ sè de tián yě.

她看着窗外的房子和树慢慢地往后退，铁路两边是大片绿色的田野。

She watched the houses and trees outside the window slowly fall behind; on both sides of the railway stretched green fields.