A decade earlier, before a divorce, Baird was a middle-class homeowner, working occasional part-time jobs in factories and for the U.S. Postal Service.
Back room: Electronic information technology located in Spaces frequented only by service personnel for maintenance, repair, or occasional monitoring of equipment.
Back room：位于那些服务人员进行维护、修理，或偶尔进行设备监控时才去的地方的电子信息技术。
3
In spite of these checks, there were occasional and sometimes spectacular accidents due to wheel or axle fractures on trains in service.