Translation of "Objective" in Chinese

Does objective history exist?

客观的历史存在吗？

We aim at that objective.

我们命中了目标。

He explained the plan's main objective.

他解释了这个计划的主要目标。

The objective of law is justice.

法律的目標是正義。

In the end he achieved his objective.

他终于完成了他的目标。

- He explained the main purpose of the plan.
- He explained the plan's main objective.

他解释了这个计划的主要目标。

- She aims at becoming a teacher.
- His objective is to become a teacher.
- Her goal is to become a teacher.

她的目的是成为教师。