Home: at; Thinking: thinking. Although I am in a safe environment, I also think about the possibility of danger. It means to be prepared for emergencies at any time.

Sentence: Although it is a peaceful time, we can't forget the shame of the past. Only when we are prepared for danger in times of peace can we have long-term development.

Alarm rings

Literally, it means-the bell of vigilance rings for a long time

Sentence making: Safety is no small matter, and we must always pay attention to safety issues in order to achieve the effect of sounding the alarm.