他从当外交官起开始了他的从政生涯.用英语怎么说？

他从当外交官起开始了他的从政生涯.

He started his official career as a diplomat.

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。

started

v. 出发，启程( start的过去式和过去分词 )，起动，提出（问题），开办；

例句
He started eating an apple...
他开始吃苹果。

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。

official

n. 行政官员，公务员，[体]裁判，高级职员；adj. 官方的，法定的，公职的，公务的，官气十足，正式的；

例句
The Party was certainly not an official adjunct of the police department.
该党派肯定不是公安部门的官方附属机构。

career

n. 生涯，职业，事业；vi. 全速前进，猛冲；

例句
...a second career which absorbed her more completely than her acting ever had.
比演艺生涯更让她投入的又一职业

as

adv. 同样地，一样地，例如；prep. 作为，以…的身份，如

例句
As far as I can recall, Patti was a Smith.
我记得帕蒂是姓史密斯的。

diplomat

n. 外交官，有外交手腕的人，善于交际的人，处事圆滑机敏的人；

例句
A role as senior diplomat would be a good alibi for his absence.
高级外交官的角色将是他缺席的上佳托词。