When the instrument is situated at more than 700 miles from the earthquake centre.

如果把这种仪器安装在距震源700多英里远的地方。

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"A significant tsunami was generated by this earthquake," said the Pacific tsunami warning Centre. The tsunami warning was later withdrawn after the danger of further waves had passed.

太平洋海啸预警中心：这次强烈的海啸是由地震引发的，地震波危险期过后，海啸预警随后就取消了。

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In late 2005 the centre coordinated the international medical response to Hurricane Katrina and to the earthquake in Pakistan.

在2005年晚些时候，该中心还协调了对卡特里娜飓风和巴基斯坦地震的国际医疗应对。

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Google has created a 2011 Japanese Earthquake and Tsunami crisis resource centre with emergency phone numbers, a person finder tool and updated public transportation information (in Japanese).

BBC: Resources for travellers stranded by Japanese tsunami

However, as the centre of the earthquake and tsunami was located just a few kilometers off the Indonesian islands of Mentawai, even the very swift warning from Indonesian authorities could not reach the fishing villages on Pagai or Sipora before the tsunami hit the shore.

UNESCO: Social and Human Sciences

They rapidly set up first-aid clinics in three main centres, as well as a hospital in Rostaq, the centre of the earlier earthquake.

ECONOMIST: Afghanistan