常见例句"Stark circle of rock measuring about 60 feet [18 meters] in diameter likes in the T閚閞?desert below the massif of Adrar Madet in Niger. “在尼日尔阿德拉尔-梅地特。。。沙漠的沙丘之下，有一个直径60英尺（合18米）的全圆石圈。 返回 Madet