On the watch; active; brisk; ready; vigilant. 留心的;活泼的;敏捷的;警觉的;防备的。 A warning signal; a guarding against surprise. 警报;警备;注意;小心。 Period during which an alert is in effect. 警戒或警报期间。 The coast guard alerted the town to the coming hurricane. 海岸警备队令市民警觉即将来临的飓风。 to alert a community to dangers of inflation 令社会警觉通货膨账的危机。 adv. alertly. n. alertness. attentive, observant, prompt. |