The phrase "region surrounded by" is correct and usable in written English
You can use it to refer to an area that is surrounded by other areas, such as geographic features, cities, countries, etc. Example: "The city was located in a region surrounded by lush green forests."
It lies in a rich agricultural region surrounded by vineyards and orange groves.
Typically, receptive fields have a concentric structure made up of a central region surrounded by an annular ring, with the central and annular areas having opposite properties.
The city is situated near the Missouri River, at the eastern foot of the Continental Divide (elevation 3,955 feet [1,205 metres]), in Prickly Pear Valley, a fertile region surrounded by rolling hills and lofty mountains.
It is misleading to speak of peace, tranquillity and future golf courses in a region surrounded by 10,000 troops and home to a radical and organized peasantry that has nowhere else to go and that continues to replant its traditional coca crops in the absence of viable alternatives.
But as a recent report from the Brussels-based International Crisis Group, "Risking War", points out, the most dangerous moment may come in 2012, when Azerbaijani oil revenues start falling and Mr Aliev's government may feel the country's military edge over Armenia is at its greatest.Nagorno-Karabakh sits in a strategically vital region, surrounded by Georgia, Russia, Iran and Turkey.
The region surrounded by the red rectangle contains woods only, and the other contains lawn only.
It is the most stable thermodynamic structure that a phospholipid-water mixture can take up: the fatty acid portion of each molecule dissolved in the organic phase formed by the identical regions of the other molecules and the water-attractive regions surrounded by water and facing away from the fatty acid regions.
Pimonidazole staining corresponded to 18F-FMISO uptake regions, surrounded by blood flow preserved regions (Fig. 6).
Regions surrounded by white contours contain 50 or more seismic rays.
In nanocomposite devices, the inorganic nanocrystals easily aggregate to form some regions surrounded by regions of polymers.
The regions surrounded by the dotted line represent the customers in these VPPs with willing to participate in DR, and the regions can be regarded as VPPs.
