4 sentences

1. 不知何故，你仍然听起来很困惑。

   bù​zhī​hé​gù, nǐ réng​rán tīng qi​lai hěn kùn​huò.

   Somehow, you still sound confused.

   Source: CCMatrix

2. 他知道，不知何故，其他人也在摔倒。

   tā zhī​dao, bù​zhī​hé​gù, qí​tā rén yě zài shuāi dǎo.

   He knew, somehow, that the others were falling too.

   Source: CCMatrix

3. 这块冰冷的灰色岩石不知何故成了人类的新家。

   zhè​kuài bīng​lěng de huī​sè yán​shí bù​zhī​hé​gù chéng le rén​lèi de xīn​jiā.

   This cold, gray rock has somehow become humanity's new home.

   Source: CCMatrix

4. 不知何故，我知道现在是什么时间：清晨，6月21日，夏至的那一天。

   bù​zhī​hé​gù, wǒ zhī​dao xiàn​zài shì shén​me shí​jiān: qīng​chén,6 yuè21 rì, xià​zhì de nà yī​tiān.

   Somehow, I knew what time it was: early morning, June 21, the day of the summer solstice.

   Source: CCMatrix