2 sentences

1. 4在韩国被认为是不吉利的数字。

   4 zài hán​guó bèi rèn​wéi shì bù​jí​lì de shù​zì.

   In South Korea the number four is considered unlucky.

   Source: CCMatrix

2. 在西方文化中，13号星期五是非常不吉利的一天。

   zài xī​fāng wén​huà zhōng,13 hào xīng​qī​wǔ shì fēi​cháng bù​jí​lì de yī​tiān.

   In the Western culture, Friday the 13th is considered to be a very unlucky day.

   Source: CCMatrix