Take two cases: since the tsunami, Sri Lanka's largest telephone company has started an early-warning system which would send SMS messages to every mobile phone in an area at risk of flooding.

举两个事例：海啸发生以来，斯里兰卡最大的电话公司已经启动了一个预警系统，后者将向处于洪水泛滥危险区域内的每一部移动电话发送短消息。

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Okay, so JMA's newest pre-quake warning system doesn't cover as much ground as SMS alerts, but with only 10 to 20 seconds of available panic time before an earthquake hits, we'd probably be toppling over one another before we could even find our cellphone anyway.

ENGADGET: Japan Meteorological Agency develops earthquake warning system