2 sentences

1. 我不想成为你追求梦想的绊脚石。

   wǒ bù xiǎng chéng​wéi nǐ zhuī​qiú mèng​xiǎng de bàn​jiǎo​shí.

   I don't want to be a stumbling block to your pursuit of your dreams.

   Source: Dong Chinese Dictionary

2. 这种陈旧的观念已经成了改革的绊脚石。

   zhè zhǒng chén​jiù de guān​niàn yǐ​jīng chéng le gǎi​gé de bàn​jiǎo​shí.

   These outdated ideas have become a stumbling block to reform.

   Source: Dong Chinese Dictionary