3 sentences

1. 中奥两国建立了友好关系。

   Zhōng ào liǎng guó jiàn​lì le yǒu​hǎo guān​xi.

   China and Austria have established friendly relations.

   Source: Dong Chinese Dictionary

2. 他在奥委会工作。

   tā zài ào wěi huì gōng​zuò.

   He works for the Olympic Committee.

   Source: Dong Chinese Dictionary

3. 这篇古文的意旨宏奥，极难完全领会。

   zhè piān gǔ​wén de yì​zhǐ hóng ào, jí nán wán​quán lǐng​huì.

   The meaning of this ancient text is profound and abstruse, making it very difficult to fully grasp.

   Source: Dong Chinese Dictionary