371. He should be prepared to make sacrifices to study his chosen field in depth. He should have an ambition to make some meaningful contribution to man's knowledge.

译文

他应该准备好为深入研习自己选中的知识领域而做出牺牲。他应该有为人类知识作出一些有意义的贡献的抱负。

点睛

be prepared to do sth.意为“愿意做某事”。如：
I'm not prepared to accept your conditions. 我不愿意接受你的条件。
make sacrifices意为“做出牺牲”。如：
His parents made sacrifices so that he could have a good education. 为了让他接受良好的教育，他的父母做出了不少牺牲。
in depth意为“全面，深入，详细”。如：
You should look at the report in depth. 你应该仔细看看这份报告。
ambition意为“志向，野心，雄心”。如：
She is intelligent but suffers from a lack of ambition. 她很聪明，但却缺乏远大志向。
make a contribution to此处意为“为……作贡献”。如：
He made a positive contribution to the project. 他对项目作出了积极的贡献。

考点归纳

contribution除表示“贡献”外，还有以下含义：
“捐款，捐资”。如：
They are asking for contributions to disaster relief. 他们在为赈灾募捐。
“定期缴款”。如：
You can increase your monthly contributions to the pension scheme. 你可以增加每月养老金计划的缴费金额。
“投送的稿件”。如：
This month's issue has contributions from several famous writers. 这期月刊有几位著名作家的稿件。
“捐助”。如：
They rely entirely on voluntary contribution. 他们全靠自愿捐助。