канавки / жолобки з гострими краями
rifling grooves
rifling grooves configuration
annular gas sealing grooves
inclination of the grooves
worn bearing grooves
X-shaped oil grooves
grooves
sharp gust
sharp decline
sharp fight
at the sharp end
sharp
sharp end
sharp opposition
sharp shooter
sharp shooter badge
sharp shooter crew
sharp shooter tank gunner
sharp еnd gunner
sharp eye
stay sharp