Something that is important is very significant, is highly valued, or is necessary.
The most important thing in my life was my career.
我生活中最重要的部分是我的事业。
It's important to answer her questions as honestly as you can.
重要的是你要尽可能如实地回答她的问题。
The planned general strike represents an important economic challenge to the government.
计划的大罢工给政府带来了一个重要的经济挑战。
Someone who is important has influence or power within a society or a particular group.
an important figure in the media world.
一位传媒界有势力的人物。