Contrarotating propellers are two propellers rotating in opposite directions about the same shaft axis and usually driven by the same engine. Do not confuse them with counterrotating propellers which are propellers rotating in opposite directions, but on different shaft axes.

Not just 'saman' kings: Kind parking warden helps old woman alight from taxi.

Breaking antibug commercial phones was no problem for the intercepting devices of the government.

A child! If here the heart turns sick with rath To see a little one from birth defiled, Or lame or blind, as preordained to languish Through youthless life