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。
进行一次海啸小测验。
Some experts, however, are calling for new risk assessments that take into account the deadly earthquake, tsunami and nuclear crisis in Japan.
但有些专家呼吁，就当前日本发生的灾难性地震海啸和核泄漏危机，新的风险评估应该被纳入工作日程。
To get to higher ground people would often have to travel for many kilometers. This can take more time than a fast traveling tsunami will permit.
人们转移到地势较高处通常需要行程数公里，这远远超出了海啸允许的时间。
The World Bank said this week that earthquake and tsunami reconstruction could cost Japan up to $235 billion and take up to five years.
世界银行说，日本这次地震和海啸的灾后重建大概需要五年时间，耗资2350亿美元。
Tsunami warnings take longer to generate.
海啸预警生成的时间较长。
"Tsunami waves in the deep ocean travel about the same speed as a jet plane and would take about 15 hours to reach Hawaii and about 20 hours to reach the other side of the Pacific, " he said.
海啸波在深海传播速度近似于喷气式飞机，大约15小时后到达海地，20小时后到达太平洋彼岸。
UNESCO officials say a complete evaluation of the drill will take weeks. If successful, the Indian Ocean Tsunami Warning System will soon take over primary responsibility for the region.
联合国教科文组织官员说，全部演习过程，将需要几个星期的时间。如果演习成功，印度洋海啸预警系统将立即取代原来的预警装置。
Earthquake, tsunami, flood and other natural disasters usually take great casualties, wealth losses, illness and quite a class for confusion to human being society and disastered countries.
地震、海啸、洪水等自然灾害常常会给人类社会和受灾害国家造成巨大的人员伤亡，财产损失，疾病以及相当程度的混乱。
World Bank officials say the recent earthquake and tsunami could cost Japan's economy as much as $235 billion and recovery could take up to five years.
世界银行官员说，日本最近的地震和海啸可能给日本带来两千三百五十亿美元的损失。震后恢复可能需要五年。
The time a tsunami originating around Tonga is likely to take to reach the Queensland coast is probably less than three hours.
汤加地区地震所产生引发强大的海啸到达澳洲昆士兰海岸可能不到3小时。
The time a tsunami originating around Tonga is likely to take to reach the Queensland coast is probably less than three hours.
汤加地区地震所产生引发强大的海啸到达澳洲昆士兰海岸可能不到3小时。
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