alert
adj.警觉的，警惕的，注意的；思维敏捷的；活泼的
n.警报；警戒状态
vt.向…报警
网络解释.如警示消息；敏锐的；活跃的；机警的
词形变化:
复数：alerts 复数：alerted 复数：alerted 复数：alerting 复数：alerts
派生词: alertly alertness
adj.1.警觉的;机敏的释义下的同义词
nimble ready quick vigilant clear-witted awake job the lively on watchful one's prompt wide toes attentive