单词syrtis major
网络: 大瑟提斯；大塞地斯；大瑟提斯高原
The sprawling dark region near picture center is Syrtis Major, with the whitish Hellas impact basin just below, in the southern hemisphere.
影像中央绵延的暗色区域是西尔蒂斯大平原，它下方位在南半球的淡色区块则是希拉斯撞击盆地。
No canals are visible(! ), but large surface markings such as the dramatic, dark Syrtis Major are easily identified.
没有运河可见！但是大的火星地标很容易认出来，例如令人印象深刻的暗的大瑟提斯高原。