adrenalin

例句：

1. 1.She was so excited that she could hardly contain her excitement.
   她非常兴奋，几乎无法控制自己的兴奋。
2. 2. The adrenaline rush after the race was indescribable.
   赛后的肾上腺素激增是无法形容的。
3. 3. During the intense competition, his body released adrenaline to fuel his efforts.
   在激烈的比赛中，他的体内释放了肾上腺素来提供动力。