2 sentences for 放不下 (fàng​bu​xià)

1. 后备箱已经装满了，再也放不下别的东西了。

   hòu​bèi​xiāng yǐ​jīng zhuāng​mǎn le, zài yě fàng​bu​xià bié​de dōng​xi le.

   The trunk is full; it can't hold anything else.

   Source: Dong Chinese Dictionary

2. 即使过了这么多年，他心里还是放不下那段往事。

   jí​shǐ guò le zhè​me duō nián, tā xīn​li hái​shi fàng​bu​xià nà duàn wǎng​shì.

   Even after all these years, he still can't let go of the past.

   Source: Dong Chinese Dictionary