外刊精读4/经济学人/ 无人机送快递你看行不行

delivery drones

porch pirate

stalk van

rather than=not

fit into a round

courier

open to(possible)

pot shot

counter this risk

lean(efficient)machine

precede-recede

a receding hairline

patrol car

fitness club

diminutive loudspeaker

on board

give the bearing of the threat

pretty close

move out of the way

if all goes as planned=if all goes well