4 sentences

1. 这不是常人所能理解的。

   zhè bù shì cháng​rén suǒ néng lǐ​jiě de.

   This is not something an ordinary person can understand.

   Source: Dong Chinese Dictionary

2. 不，我敢说你的智商超过常人。

   bù, wǒ gǎn shuō nǐ de zhì​shāng chāo​guò cháng​rén.

   No, I'd say you possess above average intelligence.

   Source: OpenSubtitles

3. 他虽然是个侏儒，但意志力比常人还要坚强。

   tā suī​rán shì gè zhū​rú, dàn yì​zhì​lì bǐ cháng​rén hái yào jiān​qiáng.

   Although he is a dwarf, his willpower is stronger than that of ordinary people.

   Source: Dong Chinese Dictionary

4. 他的思想已经达到了常人难以企及的境界。

   tā de sī​xiǎng yǐ​jīng dá​dào le cháng​rén nán​yǐ qǐ​jí de jìng​jiè.

   His thinking has reached a level unattainable by ordinary people.

   Source: Dong Chinese Dictionary