24小时内澳大利亚发生三起鲨鱼袭击事件，现在澳大利亚海滩处于高度警戒中，绵延的海岸线已经被封闭。
Australia's beaches are on high alert and stretches of coastline have been closed to swimmers after three shark attacks in 24 hours.
来往频繁的油轮使这片海域一直处于可能发生石油泄漏的高度警戒状态下，而世界自然基金会估计，在未来10年里，仅从波罗的海通过的油轮数就可能翻一番。
The area is permanently on high alert for spills because of intense tanker traffic, which the World Wide Fund for Nature estimates could double in the next 10 years in the Baltic alone.
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.
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