3 sentences

1. 远处的山影微茫，若隐若现。

   yuǎn​chù de shān​yǐng wēi máng, ruò​yǐn​ruò​xiàn.

   The distant silhouette of the mountains was faint and flickering.

   Source: Dong Chinese Dictionary

2. 由于雾很大，远处的山影变得很模糊。

   yóu​yú wù hěn dà, yuǎn​chù de shān​yǐng biàn de hěn mó​hu.

   Due to the heavy fog, the silhouette of the distant mountains became very blurry.

   Source: Dong Chinese Dictionary

3. 薄暮时分，远处的山影在夕阳中变得模糊。

   bó​mù shí​fēn, yuǎn​chù de shān​yǐng zài xī​yáng zhōng biàn de mó​hu.

   At dusk, the silhouettes of distant mountains became blurred in the setting sun.

   Source: Dong Chinese Dictionary