All-clear
01
安全信号, 危险解除通知
an indication or announcement that a situation is safe, free from danger, or no longer poses a threat
例子
After the thorough inspection, the building was given the all-clear for occupancy.
经过彻底检查后，该建筑获得了安全许可以供入住。
02
绿灯, 健康状况良好
a remark made by doctors that informs patients of their recovery or the fact that they do not have any health problems
