3 sentences

1. 其他征兆或许更隐蔽，但总是存在。

   qí​tā zhēng​zhào huò​xǔ gèng yǐn​bì, dàn zǒng​shì cún​zài.

   Other signs may be more subtle, but they are always there.

   Source: CCMatrix

2. 数学揭示出隐蔽的模式以帮助我们了解周围的世界。

   shù​xué jiē​shì chū yǐn​bì de mó​shì yǐ bāng​zhù wǒ​men liǎo​jiě zhōu​wéi de shì​jiè.

   Mathematics reveals hidden patterns that help us understand the world around us.

   Source: CCMatrix

3. 在沙丘之间的粗糙表面上，霜冻被困在小隐蔽的山脊后面。

   zài shā​qiū zhī​jiān de cū​cāo biǎo​miàn shang, shuāng​dòng bèi kùn zài xiǎo yǐn​bì de shān​jǐ hòu​miàn.

   On the rough surface between the dunes, frost is trapped behind small sheltered ridges.

   Source: CCMatrix