為什麽只有荷籣一個國家得風車?

Sorry,I thought you was wrong.Windmill not only available in Netherlands.However the Netherlands windmill is famous. Windmill also available in other country. Windmill have many style. There also have Greece , Turkey , Afghanistan, Spanish, America Style and many more.But most of the time, the windmill you saw is The Netherlands style.

by the way,there is also a windmill in Hong Kong which is located at Lamma Island (Tai Ling)