contract out

详细解释:立约把...包出
【法】 保证不承担义务

英语解释：

动词 contract out:

assign a job to someone outside one's own businessrefuse to pay a levy to a union for political use

例句：

You can contract out (of the pension scheme) if you wish.你愿意的话，可以退出(这个养老金计划).