Idioms
on guard
careful or wary
The store owner has been on guard since he was robbed last month.
on hand
on hold
on horseback
on ice
on impulse
on land
on line
on location
on medication
on no account
Idioms Quiz
close at hand
that will be the day
take one's hat off to (someone)
walk on eggshells/eggs
tell (someone) off or tell off (someone)
swallow (something) hook, line, and sinker
turn down (someone or something) or turn (someone or something) down
nurse (someone) back to health
in a family way
bowl (someone) over or bowl over (someone)
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Loudness
Loudness :
Aircraft noise : 90-120 db
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