1. The radio alerted coastal residents to prepare for the storm. 无线电台向沿海居民发出警报，准备对付风暴。
2. Low Battery Alert. 低电池警报。
3. Also select a time of the day when you are alert and ready to read. 同时，还要注意挑选一天中思维清晰且适于阅读是时候来读。
英英解释
n.
1. condition of heightened watchfulness or preparation for action
2. a warning serves to make you more alert to danger
3. an automatic signal (usually a sound) warning of danger v.
1. warn or arouse to a sense of danger or call to a state of preparedness
2. very attentive or observant
3. mentally responsive
4. not unconscious; especially having become conscious
5. (usually followed by `to') showing acute awareness; mentally perceptive
