Idiom: "dead-end job"
Definition:
a job that doesn't lead to anything
Examples:
1) Working as a cashier at McDonalds is considered a dead-end job.
2) Sam finally quit his dead-end job to start his own business.
中文解释： http://www.youzienglish.com/main/idiom_of_the_day/dead_end_job/cn/
