3 sentences

1. 听了这些话，他的颜色变得很难看。

   tīng le zhè​xiē huà, tā de yán​sè biàn de hěn nán​kàn.

   Upon hearing these words, his expression became very unpleasant.

   Source: Dong Chinese Dictionary

2. 为了这点小事当众吵架，场面实在太难看了。

   wèi​le zhèi diǎn xiǎo​shì dāng​zhòng chǎo​jià, chǎng​miàn shí​zài tài nán​kàn le.

   Arguing in public over such a trivial matter was a really bad look.

   Source: Dong Chinese Dictionary

3. 这件衣服的颜色太难看了。

   zhè jiàn yī​fu de yán​sè tài nán​kàn le.

   The color of this garment is very ugly.

   Source: Dong Chinese Dictionary