名词

1.不可数名词：雇用；受雇

2.不可数名词：职业，工作

3.不可数名词：【书】使用，运用(+of)

4.可数名词：【书】事务，活动

英语解释

the act of using

the occupation for which you are paid

the act of giving someone a job

the state of being employed or having a job