写作是他的生计。用英语怎么说？

写作是他的生计。

Writing is his life.

writing

n. 文字，写作，文章，笔迹；v. 写（ write的现在分词），写信；

例句
...teaching the basics of reading, writing and arithmetic.
教授阅读、写作和算术的基础知识

is

vt.& vi. 是（be的三单形式；n. 存在；

例句
Bollinger 'RD' is a rare, highly prized wine.
博林格RD香槟是一种名贵的备受推崇的葡萄酒。

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。

life

n. 生活，生计，生命，性命，一生，寿命，人生，尘世；

例句
In his later life he became even more absent-minded.
他晚年变得愈加健忘了。