The parquets have different tones and are arranged to create alternating light and dark squares, creating a variety of patterns bound by strips of light wooden boards that trace the outline of areas.
镶木地板有着不同的色调，排列方式的不同形成了亮暗交替的正方形，亮色条木勾勒出多种类型的区域边界。
2
The analysis of trace chemical elements shows that Mu Us Desert has been repeatedly subjected to the alternating East Asian winter and summer monsoon during Holocene.