后台的气氛非常激动人心。

The atmosphere backstage was ___electric.

当我进入体育场时，我开始感受到那种激动人心的氛围。

I started to feel the ___electric atmosphere as I entered the stadium.

人群对公告的反应绝对是激动人心的。

The crowd's reaction to the announcement was absolutely ___electric.