emergency-exit lighting

例句：

1. 1. The emergency lighting inthe hospital is always on during emergencies.
   医院在紧急情况下总是开启应急照明。
2. 2. The emergency exit lighting helps people findtheir way out quickly in case of anemergency.
   紧急出口照明帮助人们在紧急情况下迅速找到出路。
3. 3. The new design of emergencylighting has been introduced to improve safety duringemergencies.
   新设计的紧急照明已经引入，以提高紧急情况下的安全性。