SENTENCE 10
The Navy Department moved into the east wing in 1879, where elaborate wall and ceiling stenciling and marquetry floors decorated the office of the Secretary.
海军部门于1879年搬进了东翼，在那里，精心制作的墙壁、天花板上的镂花涂装和镶嵌工艺地板装饰着部长办公室。
本句的主干是The Navy Department moved into the east wing。这句话中where引导了一个非限定性定语从句，修饰先行词the east wing。