The phrase "a sharp declining of" is not correct in standard written English.
The correct form would be "a sharp decline in" or "a sharp decline of."
Example: "There has been a sharp decline in sales over the past quarter."
Alternatives: "a significant drop in" or "a steep decrease in."
However, by late July there was a sharp decline of bumblebees in simple landscapes, while the abundance continued to increase in complex landscapes.
Reflecting a sharp decline of enrollments in poor neighborhoods, at least six of the "at risk" schools have predominantly minority students, including St.
William Morrow is being parachuted in to halt a sharp decline of Vodafone's Japanese mobile-phone subscribers (59,000 in January alone).
Wall Street analysts predicted a sharp decline of pork sales in grocery stores, and some consumers began steering clear of pork chops.
Racked, a fashion news site, reported earlier on Thursday that there was a sharp decline of Ivanka Trump products on Nordstrom's website.
In the control we observe a sharp decline of cooperation in the PGG, while in the treatment condition global cooperation is maintained.
Japan's dollar buying also temporarily stopped what analysts said should have been a sharp decline of the dollar against the yen.
The 2 MHz transducer produced the highest pressure amplitude near the transducer surface, with a sharp decline of approximately 40% of the sound pressure occurring in the range between 55 and 155 mm from the transducer.
In an unusually public repudiation last July, three foundations withdrew their support of Pittsburgh's public schools over what they called a "sharp decline of governance," pressuring the mayor to appoint an education task force that they help control.
[A10.] BLAMING THE PIGS As swine flu continued to spread, a growing number of nations closed their borders to pork from the United States and Mexico, and analysts predicted a sharp decline of pork in grocery stores.
