a.
1. 生命的;维持生命所必需的[Z][B]
Growth and decay are vital processes.
生长和衰亡是生命过程。
2. 充满活力的,生气勃勃的
The Chinese I knew were trusting, open, and vital.
我所认识的中国人信赖别人,坦率,充满活力。
3. 极其重要的,必不可少的[(+to/for)]
The questions put forward at the meeting are of vital importance.
会上提出的那些问题极其重要。
4. 致命的;生死攸关的
He committed a vital error.
他犯了一个致命的错误。
n.[theP]
1. (人体的)重要器官
He was lucky that the bullet missed the vitals.
他很幸运,子弹没有击中要害器官。
2. 重要部分,要害