acoustic
alarm
alert
amplifier
announce
attention
audio
broadcast
cloudy
communication
copy space
danger
disaster
earthquake
electric
emergency
emit
equipment
evacuation
event
horn
information
loud
loudspeaker
megaphone
message
metallic
mouthpiece
news
no people
noise
notify
outdoor
population
public
safety
security
signal
siren
sky
sound
speaker
station
storm
system
talk
tell
urgent
warning
weather
定額
Megaphone on cloudy sky background. Providing security in town, notification of emergencies. Emergency alert siren. City hazard warning system. Copy space for text.の素材 [FY310187770947]
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