The phrase 'has been lost over' is correct and usable in written English.
You might use it to describe something that has been diminished or forgotten over time. For example: "The art of letter-writing has been lost over the years with the rise of digital communication."
The distinction has been lost over the past few decades, but it is an important one.
Half of its coral cover has been lost over the last three decades.
Understandably little sleep has been lost over the consequences of rape for the rapist," he muses.
A good portion of the area's existing ice fields has been lost over the past four decades, and the rate of retreat has increased in recent years.
Cypriot GDP shrank by 0.8% in Q3, which means that that 5.7% of national output has been lost over the last year.
To support Greenpeace's campaign, text Arctic to 60777; greenpeace.org.uk; Twitter: #savetheArctic ■ Of the Arctic sea ice, 75% has been lost over the past 30 years.
Archaeological evidence that parts of the drawing have been lost over time strengthen the Hercules identification.
Verizon NY has been losing over $2 billion a year for the last 5 years (with a caveat to 2013).
The old steel bridges that integrate the existing railway lines are structures built with materials that are no longer used and whose knowledge has being lost over the years, often presenting severe problems of deterioration and subjected to loading environments very different from those for which they were designed.
The report suggests that some $2.2 trillion may have been lost over the past 30 years.
Hundreds of companies have closed and more than 10,000 jobs have been lost over the last two years.
