2 sentences for 空 (kōng — impractical)

1. 这些只是空洞的话语。

   zhè​xiē zhǐ​shì kōng​dòng de huà​yǔ.

   These are only empty words.

   Source: CCMatrix

2. 她的音乐很空洞。

   tā de yīn​yuè hěn kōng​dòng.

   Her music is very hollow.

   Source: OpenSubtitles