1、One hypothesis relates the formation of Chasma Boreale to underlying volcanic activity.
有一種猜測認(rèn)為博勒拉峽谷的成形與火山的地下活動(dòng)有關(guān)。

2、The northern ice cap on Mars is nearly divided into two by a huge division named Chasma Boreale.
火星北半球的冰冠幾乎被宏偉的博勒拉峽谷一劈為二。

3、Ophir Chasma is a large west-northwest-trending trough about 62 miles, or 100 km, wide.
俄斐峽谷是一個(gè)寬約62英里，或100公里的，朝向西北偏西方向的大低谷。

chasma翻譯