According to his calculations, this frozen mass enclosing the southernmost pole forms a vast ice cap whose width must reach 4,000 kilometers.

按照他的计算，遮覆南极的冰群形成一个球形的圆盖，这盖的宽大可能是四千公里。

Lead I uses the Right Arm as the negative pole and Left Arm as the positive pole, forming a vector that goes to the right.

I导联将右臂作为负极，左臂作为正极，形成一个指向右侧（左臂）的向量。