Acquire：获得，取得，学到，捕获

Obtain：获得，取得

例：

In fact, acquiring the education is a process to subliming ourselves.

事实上，受教育是一个提升自己的过程。

Her step mother acquired property which belongs to her after her father died.

她父亲死后，她的继母占有了属于她的那份财产。

He is a veteran to acquire customers.

他在争取客户方面很是老练。

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The man obtained the rose from a little girl.

这个男人从一个小女孩那里买的玫瑰花。

Knowledge obtained through practice is usually more useful than books.

实践得来的经验往往比从课本上习得的更实用。

Get：取得，得到

Secure：弄到

例：

We can get lots of information from her expression.

我们能从她的表情中得到很多信息。

I got a bike from my parents on my birthday.

生日那天，我从父母那里得到一辆自行车。

Please let me know if you get my message.

如果收到我的信息请让我知道。

It almost killed myself to secure the information.

废了九牛二虎之力我才得到这些信息。

You must try hard to secure the proof about her corruption.

你必须竭尽全力得到她贪腐的证据。

Earn：赚的，使得到

Gain：获得，赚到

例：

He had to do this job to earn a living.

为了谋生，他不得不做这份工作。

You should ashamed about that you received more than he has earned.

你应该感到羞愧，因为你得到超过你应得的。

His behavior earned a reputation for selfless.

他的行动为他赢得了大公无私的美誉。

The girl gained full marks in the final examination, which surprise her teachers.

这个女孩在期末考试中取得满分的成绩震惊了她的老师们。

He gained much money in this investment.

他在这次的投资中赚了不少钱。

acquire 强调通过不断的、持续的努力而获得某物，也指日积月累地渐渐地获得。书面语用词；

get 普通用词，使用广泛，可指以任何方式得到某物，也不一定要经过努力；

secure 强调要通过努力或竞争，或需要付出代价才能获得所渴望的东西；

earn侧重指依靠自己的劳动或因付出代价与有功而获得；

gain侧重指经过努力或有意识行动而取得某种成就或获得某种利益或好处；