A mansion is a very large house.
a very large, expensive house:
例：
…an eighteenth-century mansion in New Hampshire.
The street is lined with enormous mansions where the rich and famous live.
an 18th century country mansion
A mansion is a very large house.
a very large, expensive house:
例：
…an eighteenth-century mansion in New Hampshire.
The street is lined with enormous mansions where the rich and famous live.
an 18th century country mansion