He formulated trenchant aphorisms that caught their attention.是什么意思？

He formulated trenchant aphorisms that caught their attention.

他阐述的鲜明格言引起了人们的注意.

he

pron. 他，它，一个人；n. 雄性动物；

例句
Logic had prevailed and he had abandoned the idea.
最终理智占了上风，他打消了那个念头。

formulated

v. 构想出( formulate的过去式和过去分词 )，规划，确切地阐述，用公式表示；

例句
Little by little, he formulated his plan for escape.
他一点一点地设计构思出了逃跑的方案。

trenchant

adj. 锐利的，简明的，有力的，清晰的；

例句
He was shattered and bewildered by this trenchant criticism...
他因这番尖锐的批评而万念俱灰，茫然不知所措。

aphorisms

n. 格言，警句( aphorism的名词复数 )；

例句
The aphorisms started following like water as all the old cliches got dusted off.
一些陈词滥调象尘土一样扬起,一些格言警句象洪水一样到处泛滥.

that

det. 那个，那；pron. 那个，那；conj. 多么，如此…以至，用于某些动词、形容词和名词后，引出各种从句；adv. 不那么，那样；

例句
...expensive make-up that we saw being advertised by a beautiful model...
我们所见的由一位漂亮模特代言的昂贵化妆品

caught

v. 赶上( catch的过去式和过去分词 )，接住，引起，看见；

例句
The men were caught in the act of digging up buried explosives.
那些人在挖掘掩埋的爆炸物时被逮个正着。

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。

attention

n. 注意，注意力，照料，关怀，殷勤；int. [口令]立正；

例句
Every bank pays close attention to the speed and accuracy of its staff.
每家银行都非常关注雇员的工作速度和无差错率。