夏季气温可能达到惊人的高水平。

Temperatures can reach surprisingly ___high levels in summer.

一些地区的失业率已攀升至高达30%。

The unemployment rate in some regions has climbed as ___high as 30%.

大都市地区的生活成本依然居高不下。

The cost of living in metropolitan areas remains stubbornly ___high.