闭幕式举行同时，广州市中心的安全部队保持着高度的警戒，通往闭幕式现场海星沙岛的道路封闭，周边水域也有警力巡逻。
Security forces were meanwhile on high alert in the centre of Guangzhou, blocking off roads and patrolling the waters off Haixinsha island, the venue of the closing ceremony.
因此，他建立了一个风暴警戒站工作网络，这就是现在的美国飓风中心的前身。
In response he established a network of storm-warning stations, the forerunner of today’s National Hurricane Center.
帕奇特说，如果一个硬盘进行检测的时间过多，中心就会进入警戒状态。
Mr Patchett says that if too much time passes before a drive is checked in for testing, the centre goes into an alert status.
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