看新闻学英语--skyrocket

"Auckland house prices have skyrocketed to dizzying heights over the last 20 years, but some suburbs in particular have had particularly strong growth.

....

Its population has ballooned from 1.1 million in 2001 to 1.6 million today, and that is reflected in the property market, he says."

skyrocket v.飞涨;猛涨;

dizzying high: very high

balloon n.气球;热气球;

v.(突然)膨胀，涨大;乘热气球飞行;