1·The idea is that the dogs may be able to alert police to large stashes of pirated movies.
这个好主意可以提示警方盗版电影光盘的大型隐匿场所。
2·Police are warning the public to be on the alert for suspicious packages.
警方警告公众要警惕可疑包裹。
—— 《牛津词典》
3·THE security services in Moscow are on high alert and plain-clothed American security men mingle with Moscow police.
莫斯科安全部门保持高度警惕，身着便衣的美国安全人员同莫斯科警方混杂在一起。
4·Streets around the Mall were closed on Monday morning in a security alert which police said was unrelated.
周一早上，大型商场周围的街道被封闭，警察说这与安全警戒无关。
5·Each child will be able to use their matchbox-sized beeper, fitted with GPS (global positioning system) technology, to activate any nearby cameras and alert parents and police via mobile phone.
每一个儿童都可以使用火柴盒大小内置GPS技术的呼机，来激活附近的摄像头并可通过手机通知父母和警方。
6·I know that the police in Bali for instance have reported that they've gone on a higher alert and there is extra security at Bali airport and all the main tourist spots in Bali.
我知道巴厘警方报告说，他们提高警戒水平，并在机场和主要旅游景点加派警力。
7·More than 80,000 soldiers and nearly 400,000 police and paramilitary forces are on alert to provide security for the polls.
八万多名士兵和近40万名警察及准军事人员已经处于戒备状态，准备为选举提供安全保障。
8·More than 80, 000 soldiers and nearly 400, 000 police and paramilitary forces are on alert to provide security for the polls.
八万多名士兵和近40万名警察及准军事人员已经处于戒备状态，准备为选举提供安全保障。
9·Oladimeji, who has never traveled abroad, mimes walking down a London street – head bowed but on the alert for police, who are everywhere, he says.
从来没有出过国的Oladimeji说。他模仿在伦敦街道上走路地样子—低着头，堤防着无处不在点警察。
10·Some systems automatically alert the police when spray is released.
当喷雾剂释放的时候一些系统会自动地提醒警方。