surveillance aircraft, spy plane

enemy aircraft

move, movement, motion / trend, change, fluctuation

scouting; reconnaissance

scout; spy upon; reconnoiter

surveillance

to observe, to monitor, to supervise

a loom / woven cloth

an enemy / revenge, vengeance / opponent (of the game or conflict) / (archaic, obsolete) marriage partner

an enemy / an opponent, a competitor / (historical) the other party in a lawsuit / 的: (historical) in the red-light district, a term of reference used between prostitutes and customers