Definition: an organization that represents people who do a particular job Level: B1
她加入了一个教师工会，以争取更好的工作条件。
She joined a teachers' ___union to advocate for better working conditions.
工厂工人组建了一个工会来协商他们的工资。
The factory workers formed a ___union to negotiate their salaries.
他是当地消防员工会的活跃成员。
He is an active member of the local firefighters' ___union.
