| 单词 | alert |
| 释义 | alert —alert /əˈlɜːt/ aep /-ˈlɝːt/ adjective ► C1 quick to see, understand, and act in a particular situation: » I'm not feeling very alert today - not enough sleep last night!» A couple of alert readers posted comments on the website pointing out the mistake.» Parents should be alert to sudden changes in children's behaviour.Thesaurus+: ↑Perceptive , ↑Using the eyes , ↑IntelligenceThesaurus+: ↑Reacting and respondingalertness /-nəs/ noun [U]Thesaurus+: ↑Knowledge and awareness • • • Extra Examples:» Doing puzzles and crosswords regularly keeps your mind alert and active.» Although Granny was frail in her old age, but was mentally very alert.» He was normally a bright, alert baby, so she felt sure there was something seriously wrong.» A small animal must always remain alert for predators.» There have been some thefts recently, so please stay alert and don't leave handbags and valuables around.noun [C or U] ► C1 a warning to people to be prepared to deal with something dangerous: » a bomb alert» The army was put on (full) alert as the peace talks began to fail.» The public were warned to be on the alert for (= watching carefully for) suspicious packages.Thesaurus+: ↑Threats and warningsThesaurus+: ↑Emergency services in generalverb [T] ↑Verb Endings for alert ► C2 to warn someone of a possibly dangerous situation: » An anonymous letter alerted police to the possibility of a terrorist attack at the airport.Thesaurus+: ↑Threats and warnings• • • Extra Examples:» If you hear a flood warning, please alert your neighbours and make emergency preparations.» Until I saw my statement, there was nothing to alert me that someone else was using my credit card number.» We encourage parents to alert the school about any concerns or difficulties at home.» We don't want to alarm people unnecessarily, but they should be alerted to potential dangers.» A note of formality in his voice alerted her to the fact that others were listening. |
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