It's difficult for teenagers who are generally lacking of experiences to have a clear vision for their future.

青少年一般缺乏经验，要他们对自己的未来有一个清晰的设想是很困难的。

It's a very crisp and clear vision.

它是新奇和清楚的视野。

Have a clear vision.

对未来要有一个清晰的愿景。

You must have a clear vision of your life.

你必须对你的人生有一个清晰憧憬。

Establishing a clear vision of the organization's future.

为组织未来建立一个清晰的愿景。