The mathematician , Yurchenko , was a stubby , phlegmatic , shrewd person.是什么意思？

The mathematician , Yurchenko , was a stubby , phlegmatic , shrewd person.

数学教师 尤尔钦科 是个矮胖的, 冷漠而机灵的人.

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。

mathematician

n. 数学家；

例句
This untutored mathematician had an obsession with numbers...
这位非科班出身的数学家对数字特别痴迷。

was

v. 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（ be的过去式 ），在，存在，不受干扰；

例句
There was a terrible sadness in her eyes...
她眼神中流露出深深的悲伤。

stubby

adj. 短而粗的；

例句
He nodded and puffed on a stubby pipe as he listened.
他边听边点头，还吸着一支粗短的烟斗。

phlegmatic

adj. 冷静的，镇定的，迟钝的，冷漠的；

例句
...a most phlegmatic man, steadily working on as the rain splashed down.
大雨倾盆而下时仍能沉稳工作的非常冷静的人

shrewd

adj. 精明的，敏锐的，奸诈的，狡猾的，有眼光的，精于盘算的；

例句
The President has played a shrewd diplomatic game because from the outset he called for direct talks with the United States...
总统玩了一场高明的外交游戏，因为从一开始他就要求和美国直接对话。

person

n. 人，（语法）人称，身体，容

例句
A sick person needs absolute confidence and trust in a doctor.
病人需要对医生有绝对的信心和信任。