Same, the width of sofa seat surface also shoulds not be too big, ask to be in 540 millimeter by the standard normally, such use, crus can adjust sitting position at will, rest more cozily.

• 同样，沙发座面的宽度也不宜过大，通常按标准要求在540毫米之内，这样使用，小腿可随意调整坐姿，休息得更舒适。