这种激光器是军方的“蝗虫”系统，由AeroVironment Inc.制造。
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And increased development will only exacerbate flooding – concreting over surfaces for housing or car parks prevents rain being absorbed and instead it runs off into drains and rivers which can become overwhelmed and breach defences.
"That temperature is pretty nice here, really," he says. "Minus five is as warm as it gets. It can get down to about -40, but you're looking at about -20 being the average."