"国家级紧急警报" "在显示第一条警报（国家/地区级警报除外）后，显示可供用户停用 CMAS 的对话框。" "国家紧急警报" "紧急警报" "紧急警报" "紧急警报" "紧急警报" "警报" "测试警报" "演习/模拟" "公共安全警报" "测试警报" "警报" "公共安全警报" "测试警报"