unprecedented rise meaning in English

空前高涨
空前涨价

The entire state has been experiencing an unprecedented rise in temperatures , even in the coastal areas otherwise known for its moderate temperature
整个州已经体验了史无前例的上升温度，甚至气候温和的沿岸地区温度也上升了。
Rapid and largely unexpected worldwide productivity growth can explain why the demand for commodities is so strong ; why emerging markets have weathered commodities price increases without a serious slowdown in investment ; why inflation is still largely contained despite the unprecedented rise in raw material costs and why both household incomes and corporate profits are buoyant at the same time
全球生产率出人意料地快速增长，能够解释下列现象：为什么大宗商品的需求如此强劲；为什么新兴市场能够经受住大宗商品价格的上涨，而没有造成明显的投资减速；为什么尽管原材料成本涨幅空前，通货膨胀基本上仍能得到抑制；以及为什么家庭收入和企业利润同时颇为强劲。