The phrase "as it deteriorated" is correct and usable in written English.
You can use it to describe a situation or condition that worsens over time.
Example: "The building was once a beautiful structure, but as it deteriorated, it became a safety hazard."
Alternatives: "as it declined" or "as it worsened".
It passed through the Mid-Atlantic States as it deteriorated into a tropical storm, and lost its tropical identity over southern Maine.
Ten minutes into the game it was clear that this would go beyond the expected mismatch as it deteriorated in something rather farcical.
But by the late nineteenth century, as little maintenance was done on the building as it deteriorated and as more and more people lived in the building, conditions got even worse.
Adebowale's mental health led to the trial being delayed and, as it deteriorated during the hearing, the decision was made that he could not testify in his own defence.
Mr. Klein, a Democrat, lives three blocks from the stable and said he had driven by for years and witnessed as it deteriorated from a popular riding spot to an eyesore in a middle-class enclave that seemed more suburb than city.
Most of our informants had to reveal their condition as it deteriorated (poor walking, increasing pain, etc).. Despite obvious symptoms, many experienced that some people questioned the extent of their pain and condition.
Tony Cooke, from Blackrock in Co Dublin, has a reason for making sure he keeps his voice as it deteriorates due to multiple system atrophy, a rare degenerative disease; he wants to make sure his dog still understands his commands.
Mr. Thompson said that while index funds charge smaller fees than actively managed funds, and many had done well over time, they lacked "aggressive, or active managers, who will say, 'Oops, look at this,' and will bail out of a situation if they start looking at it as it deteriorates".
But length also leaves a starring role to non-human, external forces: weather, cloud cover, humidity, and the condition of the pitch both at the start of the contest and as it deteriorates throughout the ensuing five days all play a part in shaping the outcome.
However, as it deteriorates, structural failures have been experienced.
More recently attention has focussed on the volatile by-products emitted by paper as it deteriorates, in an attempt to provide a truly non-invasive measurement of paper stability.
