guard against;garrison;warn;alarm;
(感觉敏锐) alert;vigilant;
alarm;police ;

Chants from the drunken party-goers woke residents and the police were called.
酩酊大醉的聚会者唱歌吵醒了居民,有人报了警。
来源:《柯林斯高阶英汉双解学习词典》When they heard the police sirens, they all set about saving their own skins.
听到警车号笛, 他们便纷纷逃窜.
来源:词典精选例句This will mean more remand prisoners being held in police cells.
这将意味着更多候审犯人会被拘押在警局拘留室。
来源:《柯林斯高阶英汉双解学习词典》I had no hesitation in calling the police because I realised he was capable of murder.
我意识到他可能要杀人,所以就毫不犹豫地报了警。
来源:《柯林斯高阶英汉双解学习词典》Killing a police officer is something that's taken very seriously and rightfully so.
杀警被视为严重的犯罪,而且理应如此。
来源:《柯林斯高阶英汉双解学习词典》
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