adrenaline

Skydiving gave her a massive rush of adrenaline as she jumped from the plane.

(Chinese) 当她从飞机上跳下时，跳伞让她感到肾上腺素激增。

The athlete relied on adrenaline to push through the final mile of the marathon.

(Chinese) 这位运动员依靠肾上腺素完成了马拉松的最后一英里。