4 sentences

1. 风每天变化着沙丘的形状。

   fēng měi​tiān biàn​huà zhe shā​qiū de xíng​zhuàng.

   The wind changes the shape of the dunes daily.

   Source: CCMatrix

2. 这个过程仍在继续，沙丘正慢慢成长。

   zhè​ge guò​chéng réng zài jì​xù, shā​qiū zhèng màn​màn chéng​zhǎng.

   This process still continues, and the dunes are slowly growing.

   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

4. 一次火山喷发导致岩浆溢出，在沙丘周围移动，但没有覆盖它们。

   yī​cì huǒ​shān pēn​fā dǎo​zhì yán​jiāng yì chū, zài shā​qiū zhōu​wéi yí​dòng, dàn méi​yǒu fù​gài tā​men.

   An eruption sent lava spilling out, moving around the dunes but not covering them.

   Source: CCMatrix