House prices had risen astronomically.是什么意思？

House prices had risen astronomically.

房价已经暴涨。

house

n. 房屋，全家人，（从事某种生意的）公司，（英国）下议院；v. 给…提供住房，收藏，安置；

例句
He was born in 1768 in the house abutting our hotel.
他于1768年出生于我们旅馆旁边的一幢房子里。

Prices

n. 价格，价钱( price的名词复数 )，代价，行市；

例句
The arts should be available to more people at prices they can afford...
艺术品应该以人们能够承受的价格面向更多的人出售。

had

v. 有（ have的过去式和过去分词 ），（亲属关系中）接受，拿，买到；

例句
He claimed that his parents had abandoned him...
他声称父母遗弃了他。

risen

adj. 升起的；v. 起义( rise的过去分词 )，升起，（数量）增加，休会；

例句
Teenage conceptions have risen steadily in the last ten years.
过去10年中，少女怀孕的现象不断增多。

astronomically

adv. 天文学上；

例句
He was astronomically wealthy.
他富甲一方。