4 sentences

1. 他昂着头，显得非常自信。

   tā áng zhe tóu, xiǎn​de fēi​cháng zì​xìn.

   He held his head high, looking very confident.

   Source: Dong Chinese Dictionary

2. 昂首挺胸。

   áng shǒu tǐng​xiōng.

   Hold your head high and puff out your chest.

   Source: Dong Chinese Dictionary

3. 他器宇轩昂，给人留下深刻印象。

   tā qì​yǔ xuān áng, gěi rén liú​xià shēn​kè yìn​xiàng.

   He has a dignified and imposing presence, leaving a deep impression.

   Source: Dong Chinese Dictionary

4. 这种名贵药材的产量非常少，因此价格极昂。

   zhè zhǒng míng​guì yào​cái de chǎn​liàng fēi​cháng shǎo, yīn​cǐ jià​gé jí áng.

   The yield of this precious medicinal herb is very low, making its price extremely high.

   Source: Dong Chinese Dictionary