Meaning of hāi:
hāi
嗨
Interjection
oh alas; hey!; hi! (loanword); a high (natural or drug-induced) (loanword)
Hāi, wǒ jìngrán wàngjìle jīntiān shì tā de shēngrì.
嗨，我竟然忘记了今天是她的生日。
Oh alas, I actually forgot today is her birthday.
Tā duì wǒ shuō le yī shēng: “hāi!”
她对我说了一声：“嗨！”
She said to me: "Hey!"
Měi cì jiàn dào tā, tā zǒng shì kāi xīn de shuō: "Hāi!"
每次见到他, 她总是开心地说："嗨!"
Every time she sees him, she always happily says: "Hi!"
Tā jīntiān tèbié hāi, yīzhí zài chànggē hé tiàowǔ.
他今天特别嗨，一直在唱歌和跳舞。
He was especially high today, singing and dancing all the time.
