Men of science had reason to be proud of their achievements.是什么意思？

Men of science had reason to be proud of their achievements.

科学家有理由为他们取得的成就而自豪.

men

n. 人( man的名词复数 )，人类，男人，男子汉；

例句
Many men still have difficulty accepting a woman as a business partner...
许多男性仍然无法接受女性商业伙伴。

of

prep. 关于，属于…的，由…制成；aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气]；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

science

n. 科学，技术，知识，学科，理科；

例句
It is accepted wisdom that science has been partly responsible for the decline of religion.
人们普遍认为，科学的兴起是宗教衰落的部分原因。

had

v. 有（ have的过去式和过去分词 ），（亲属关系中）接受，拿，买到；

例句
He claimed that his parents had abandoned him...
他声称父母遗弃了他。

reason

n. 理由，原因，理性，理智；vt.& vi. 推理，思考，争辩，辩论，向…解释；

例句
As always, Peter had a reason for his action...
一如往常，彼得对自己的行为总有说辞。

to

prep. 向，朝着，到，关于，属于；adv. 朝一个方向的，到某种状态，关闭；

例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。

be

v. 是，有，存在，做，成为，发生；aux. 用来表示某人或某物即主语本身，用来表示某人或某物属于某一群体或有某种性质；

例句
The older child should be able to prepare a simple meal...
那个年纪稍大的孩子应当会做一顿简单的饭菜。

proud

adj. 自豪的，得意的，光荣的，高尚的，傲慢的，有自尊心的；

例句
Derek is now the proud father of a bouncing baby girl.
德里克现在是一位自豪的父亲，他有一个健康的小女儿。

their

pron. 他（她，它）们的，在提及性别不详的人时，用以代替 him 或 her；

例句
Their permissiveness toward their children reflects the wild abandon of their own lives.
他们对孩子的放任折射出他们自身生活的放浪形骸。

achievements

n. 成就( achievement的名词复数 )，成绩，功绩，达到；

例句
He compared the achievements of the British and the French during 1916 and concluded that the latter were better all around.
他比较了1916年英国人和法国人的成就，结论是法国人在各方面都做得更好。