帮忙翻译:北京市朝阳区建国路88号现代城6#楼1905室

Room 1905, 6th Floor, Xian Dai Cheng Building, No.88, Jianguo Road, Chao Yang District, Beijing City, China
因为你的地址是中国邮递员看的，所以现代城如用Modern Building 他们可能更迷糊，而用拼音则比较明了。

Room 1905, Block 6,
Modern City, No.88,
Jian Guo Road, Zhao Yang Distrcit,
Beijing,China

Room 1905, 6th Building, Xian Dai Cheng Block, No.88, Jianguo Road, Chao Yang District, Beijing, China.
注: "6th Floor" 表示"六楼".
"a building" 表示一栋楼
"a block" 表示一片楼群,一个街区.