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英语:alarm,warn区别

1.alarm 是名词,警报,报警器,恐慌eg.give the alarm 发警报Small earthquakes are so common here that people don‘t feel much alarm

AWACS

[/ˈeɪwæks; ˋewæks/] abbr 缩写 = airborne warning and control system 机载警报和控制系统:planes fitted with AWACS 装有机载警报和控制系统的飞机.

alert

alertəˈlɜ:tadj. 警惕的,机警的; n. 警报【英】adj. 警惕的,机警的(quick to think or act);n. 警报(warning);【类】stupor : alert / despair : hopeful (昏迷不再机警/绝望不再有希望)【根】派生词: a