外刊精讀4/經(jīng)濟(jì)學(xué)人/ 無人機(jī)送快遞你看行不行
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
標(biāo)簽：
