Japan is officially a parliamentary constitutional monarchy.

日本是正式的议会制君主立宪制国家。

Officially Britain's government is a parliamentary constitutional monarchy, the role of the royal leader is mostly ceremonial with the lawmaking and governing power vested in parliament.

英国的官方政府是议会制君主立宪制，王室领导人的角色主要是礼仪性的，立法权和统治权属于议会。

" It's been the longest period of stability and prosperity in Spain ever in a parliamentary monarchy, " the king said.

“这是西班牙议会君主制有史以来最长的稳定和繁荣时期，”国王说。