Some forethought and preparation is necessary before you embark on the project.

你着手进行这个项目之前必须有所考虑，有所准备。

She is about to embark on a diplomatic career.

她即将开始外交生涯。

Those who embark on the quest for knowledge of the best regime may not return the same people that they were before.

那些追寻最优政体知识的人可能最后都完全地变了一个人。

In some cases they must embark on state-building, too.

在某些情况下，他们还必须着手建立整个国家体系。

It is so important to embark on that journey not alone.

不孤单地开始这个旅程是非常重要的。