（火星北半球的）大流沙地带

Syrtis Major───（火星北半球的）大流沙地带

Syrtis Minor───轻微口炎

vis major───[保险]不可抗力

Syrtis Minors───六十名未成年人

sergeants major───n.军士长

Canis Major───大犬座（星座）

drum major───乐队指挥

martian equator sits a volcano1100kilometers in diameter named syrtis major.───在火星的赤道附近，座落著一个直径1100公里的火山，称为大三角。

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。