2 sentences

1. 我心中涌起一种莫名的失落感。

   wǒ xīn zhōng yǒng​qǐ yī zhǒng mò​míng de shī​luò​gǎn.

   An inexplicable sense of loss welled up in my heart.

   Source: Dong Chinese Dictionary

2. 望着故乡的远景，他心中涌起一股无限的惆怅。

   wàng zhe gù​xiāng de yuǎn​jǐng, tā xīn​zhōng yǒng​qǐ yī gǔ wú​xiàn de chóu​chàng.

   Gazing at the distant view of his hometown, a sense of infinite melancholy welled up in his heart.

   Source: Dong Chinese Dictionary