4 sentences

1. 他的心胸非常宽弘，不会为了小事生气。

   tā de xīn​xiōng fēi​cháng kuān hóng, bù huì wèi​le xiǎo​shì shēng​qì.

   He is very broad-minded and doesn't get angry over trivial matters.

   Source: Dong Chinese Dictionary

2. 他的心胸非常宽广，从不计较个人的得失。

   tā de xīn​xiōng fēi​cháng kuān​guǎng, cóng bù jì​jiào gè​rén de dé​shī.

   He is very broad-minded and never fusses over personal gains or losses.

   Source: Dong Chinese Dictionary

3. 他心胸狭隘，总是为了一些微不足道的小事斤斤计较。

   tā xīn​xiōng xiá'ài, zǒng​shì wèi​le yī​xiē wēi​bù​zú​dào de xiǎo​shì jīn​jīn​jì​jiào.

   He is narrow-minded and always fusses over trivial matters.

   Source: Dong Chinese Dictionary

4. 少年应当有远大的心胸和抱负。

   shào​nián yīng​dāng yǒu yuǎn​dà de xīn​xiōng hé bào​fù.

   Youth should have broad minds and great ambitions.

   Source: Dong Chinese Dictionary