It measured four to five miles in circumference.

它周围四海里至五海里长。

Gusts have been measured as high as 50 miles per hour.

阵风时速可达每小时50英里。

Gusts have been measured as high as 50 miles per hour. That's a force of a tropical storm.

平昌的最高风力达到每小时50英里。这一风力相当于热带风暴。

Then, steering his Nautilus with consummate dexterity, he skillfully dodged the masses of ice, some of which measured several miles in length, their heights varying from seventy to eighty meters.

他于是巧妙无比地指挥着他的诺第留斯号，很灵便地躲开了那些大冰块的冲击，有些冰块是长到几海里，高七十至八十米不等。