4 sentences

1. 13是一个不吉祥的数字。

   13 shì yī​ge bù jí​xiáng de shù​zì.

   13 is an unlucky number.

   Source: OpenSubtitles

2. 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

3. 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

4. 车轮搅起的石块，在车身下发出不吉祥的锤击声。

   chē​lún jiǎo qǐ de shí​kuài, zài chē​shēn xià fā chū bù jí​xiáng de chuí​jī shēng.

   The wheels scooped up stones which hammered ominously under the car.

   Source: UM-Corpus: Education