The pound has sunk to its lowest recorded level against the dollar.

英镑对美元的比价降到了有记录以来最低水平。

《牛津词典》

The US has always been a remarkably mobile country, but new data from the Census Bureau indicate that mobility has reached its lowest level in recorded history.

美国一直是一个流动性很强的国家，但美国人口普查局的最新数据显示，美国的人口流动率已降至有记录以来的最低水平。

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Special filters enable you to select the type and level of data recorded by the probes.

专门的过滤器使您能够选择由探测记录的数据的类型和级别。

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The Elwy reached its highest recorded level breaching flood defences designed to cope with a one in 100-year event, says the report.

BBC: St Asaph floods cost council house insurers ?1m

Following an explosion at reactor No. 2 in Fukushima Tuesday morning, radiation levels at the plant briefly spiked to the highest level recorded yet: 40 rem a level that could cause acute sickness.

FORBES: Japan Radiation Fears May Outstrip The Real Health Dangers

The researchers found that men with the highest tibia lead level were 2.7 times more likely to develop a cataract than those who recorded the lowest level of lead in this bone.

BBC: NEWS | Health | Lead exposure link to cataracts