beeper

n.给无人驾驶飞机发送信号的装置

bedside, bedsore, bedspread, bedstead, bedtime, bee, bee-keeper, bee-line, Beeb, beech, beef, beef tea, beefburger, beefeater, beefsteak, beefy, beehive, beekeeper, been, beep, beer, beer-mat, beery, beeswax, beet, Beethoven, beetle, beetling, beetroot, beeves, befall, befit, befitting, befittingly, befog, before, before long, beforehand, befriend, befuddled,