nán guò
那时家里人口多，收入少，日子真难过。
nà shí jiā lǐ rénkǒu duō, shōurù shǎo, rìzi zhēn nánguò
At that time, there were many people in the family, income was low, life was really hard
肚子里难过得很
dùzi lǐ nánguò de hěn
I feel very uncomfortable in my stomach
他听到老师逝世的消息，心里非常难过。
tā tīngdào lǎoshī shìshì de xiāoxi, xīnlǐ fēicháng nánguò
He felt very sad when he heard the news of his teacher's passing