Low-lying Padang is seen as vulnerable to a tsunami and its residents have been trained to flee to higher ground along designated routes when an alert is sounded.

地势低洼的巴东看来易受海啸袭击，当地居民已受过训练，一旦警报响起，他们就会按指定路线撤离至地势较高处。

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Another pilot on the ground at the heliport saw the plane approaching and tried to radio an alert to the helicopter above. But the warning was either not heard, or failed to get through in time.

另一名驾驶员在机场地面看到小型飞机向直升机飞近，他设法用无线电紧急警告上空的直升机驾驶员，但他可能没有听到，或听到时为时已晚。

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For nearly 13 years, Yao and Liu spent hours in an Internet cafe next to the training ground playing "Red Alert" and "Counterstrike."

在这13年里，姚明和刘炜在训练基地旁的网吧内度过了很多的时间玩红警和CS。

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It rolled and crashed vertically into the ground before the tower could alert the pilot, Plagens said.

CNN: One killed in California plane crash

According to Israel's army radio, army chief Lieutenant General Gaby Ashkenazi had ordered ground, air and naval forces to be on alert.

BBC: New security measures could remain in place for months

An effective warning system for such a natural disaster would quickly alert all residents in at-risk areas to move to higher ground.

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