幫我把這段文字翻譯成英文

On the Neptune surface has a greatly dark class, a small dark class
and some volume cloud types small storms, the greatly dark class's
wind speed for each hour 2,000 kilometers, is crown of the entire
solar system.

Neptune has a big dark class , a small dark class and some small-scale storms of cirrus form on the surface, the wind speed of the big dark class is 2000 kilometers per hour, and the first of the whole solar system.

There is a big and small dark spot and some small storms like cirrus cloud on the Neptune. The big dark spot's wind speed is 2000 km/hour, is the crown of the entire solar system.