Meaning of kǎi:
凯
surname Kai; (bound form) triumphal music; chi (Greek letter Χχ)
Tā de xìng shì Kǎi.
他的姓是凯。
His last name is Kai.
Shènglì de yuèzhāng chōngmǎn le kǎixuán de xǐyuè.
胜利的乐章充满了凯旋的喜悦。
The victory symphony was filled with triumphal joy.
Xīlà zìmǔbiǎo zhōng de dì 22 gè zìmǔ shì kǎi.
希腊字母表中的第22个字母是凯。
The 22nd letter in the Greek alphabet is chi.
(Tw) (coll.) generous with money; lavish in spending
Tā zǒng shì nàme kǎi, qǐng péngyǒumen chīfàn hējiǔ.
他总是那么凯,请朋友们吃饭喝酒。
He is always so generous, treating friends to meals and drinks.