2 sentences for 快感 (kuài​gǎn)

1. 这种成功的快感是他多年努力的最好回报。

   zhè zhǒng chéng​gōng de kuài​gǎn shì tā duō nián nǔ​lì de zuì hǎo huí​bào.

   The thrill of this success is the best reward for his years of hard work.

   Source: Dong Chinese Dictionary

2. 这种极限运动带给他肾上腺素飙升的快感。

   zhè zhǒng jí​xiàn yùn​dòng dài​gěi tā shèn​shàng​xiàn​sù biāo​shēng de kuài​gǎn.

   This extreme sport gives him an adrenaline-pumping thrill.

   Source: Dong Chinese Dictionary