3 sentences

1. 我无心伤害你，请你原谅。

   wǒ wú​xīn shāng​hài nǐ, qǐng nǐ yuán​liàng.

   I didn't mean to hurt you; please forgive me.

   Source: Dong Chinese Dictionary

2. 我们无心打扰。

   wǒ​men wú​xīn dǎ​rǎo.

   We don't mean to bother.

   Source: OpenSubtitles

3. 他现在无心学习，只想睡觉。

   tā xiàn​zài wú​xīn xué​xí, zhǐ xiǎng shuì​jiào.

   He has no heart for studying right now; he just wants to sleep.

   Source: Dong Chinese Dictionary