3 sentences

1. 这种极限运动非常有刺激性。

   zhè zhǒng jí​xiàn yùn​dòng fēi​cháng yǒu cì​jī​xìng.

   This extreme sport is very thrilling.

   Source: Dong Chinese Dictionary

2. 跳伞是一项挑战自我的极限运动。

   tiào​sǎn shì yī xiàng tiǎo​zhàn zì​wǒ de jí​xiàn yùn​dòng.

   Parachuting is an extreme sport that challenges oneself.

   Source: Dong Chinese Dictionary

3. 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