1-- What does your job involve?
 
2-- I'm the Project Manager so I have to make sure our projects run smoothly. I work with three Project Engineers. They take care of after-sales service and look after the maintenance side of the business.
 
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注解：
 
1.involve涉及
2.smoothly顺利地
3.maintenance维修
 
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译文：
 
1--你的工作范围是什么？
2--我是项目经理，因此我要确保我们的工程顺利进行。我与三个设计工程师一起工作。他们负责售后服务并负责维修方面的业务。