求翻译：故宫始建于公元1406，故宫有大小院落90多座，房屋有980座，共计8704间。宫城周围环绕着高12米，长3400米的宫墙，形式为一长方形城池，墙外有52米宽的护城河环绕，形成一个森严壁垒的城堡。故宫是什么意思？

The Imperial Palace was built in 1406 AD, more than 90 large and small courtyards in the Forbidden City housing 980, a total of 8704. Miyagi is surrounded by a wall of a height of 12 meters long and 3400 m, in the form of a rectangular city wall, 52 meters wide moat surrounded the formation of a cas

The palace was built in the year 1406, the museum has more than 90 yard size, housing a 980 seat, for a total 8704. City Palace surrounded by a high 12 M, 3400 m long wall here in the form of a rectangular fame outside the wall, there is a 52-meter-wide moat, surrounded by a heavily guarded barriers

The Imperial Palace beginning constructs at the A.D. 1406, Imperial Palace has the size courtyard more than 90 places, the house has 980, total 8704 between.Around the imperial city is surrounding the height 12 meters, the length 3400 meter palace walls, the form is a rectangular city, outside the w

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