The physicist disproved his colleagues'theories.是什么意思？

The physicist disproved his colleagues'theories.

这名物理学家驳斥了他同事的理论.

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

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

physicist

n. 物理学家，唯物论者，<古>自然科学家，宇宙机械论者；

例句
You are listening to radiation physicist Thomas Borak at Colorado State University.
你正听到的是科罗拉多大学放射物理学家汤姆斯·博拉克的发言.

disproved

v. 证明（理论等）错误，反驳( disprove的过去式和过去分词 )；

例句
This discovery disproved the idea that the world was flat.
这个发现驳斥了地球是扁平的看法.

his

pron. (he的所有格)他的，(he的物主代词)他的东西；det. 属于他的，用于名词前，自己的，指某人的，上帝的；

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

theories

n. 学说( theory的名词复数 )，理论，原理，意见；

例句
Many theories have been advanced as to why some women suffer from depression...
就一些女性患抑郁症的原因，各种说法纷至沓来。