在英文中，"intense" 是一个常用的形容词，可以用来形容一件事情很激烈。例如：

The competition was intense. (竞争非常激烈。)
The negotiations were intense. (谈判非常激烈。)
The training program was intense. (训练计划非常激烈。)

"Intense" 源自拉丁文 "intensus"，意思是"努力的，专注的"。这个词也可以用来形容一种情绪或感受，例如：

She felt an intense desire to succeed. (她有强烈的成功欲望。)
He had an intense fear of heights. (他有强烈的恐高症。)

此外，还有一些常用的形容词可以用来形容事情很激烈，例如：

Vigorous (有力的，精力充沛的)
Fierce (凶猛的，强烈的)
Intense (强烈的，极度的)
Passionate (充满激情的，热烈的)
Intensive (集中的，强化的)

例句：

The game was very vigorous. (比赛非常有力。)
The debate became fierce. (辩论变得凶猛。)
She had a passionate desire to learn. (她有强烈的学习欲望。)
The training program was intensive. (训练计划非常集中。)