4 sentences

1. 他把落叶堆积在院子一角。

   tā bǎ luò​yè duī​jī zài yuàn​zi yī​jiǎo.

   He piled up fallen leaves in a corner of the yard.

   Source: UM-Corpus: Education

2. 花园的一角长了一些野花。

   huā​yuán de yī​jiǎo zhǎng le yī​xiē yě​huā.

   Some wild flowers are growing in a corner of the garden.

   Source: UM-Corpus: Education

3. 希腊当然只是冰山一角。

   xī​là dāng​rán zhǐ​shì bīng​shān​yī​jiǎo.

   Greece is of course just the tip of the iceberg.

   Source: AI Challenger 2017

4. 书中收集的20个记录详实的案例只是冰山一角。

   shū zhōng shōu​jí de20 ge jì​lù xiáng​shí de àn​lì zhǐ​shì bīng​shān​yī​jiǎo.

   The 20 well-documented cases collected in the book are just the tip of the iceberg.

   Source: CCMatrix