英和和英

an unidentified flying object

an unidentified ship

an unknown island

destination unknown

an unidentified species

an unknown source

to kick flying object

incapable of flying

an unembellished figure

an unknown quantity

an unknown quantity

an unidentified witness

an aircraft that has no tail

an anonymous piece of correspondence

an unknown amount

unclaimed luggage

an entity that is not named specifically

an indefinite article

in a manner that is unclear

an object that flies in the air

a breathless flight

a reconnaissance plane

the art of flying

an unknown number

to set foot on an unknown place

a type of aircraft, called rocket

flying by inertia

an act of flying away

wrecks of an airplane

a nonstop flight