ozone
ozone — noun
1. a kind of oxygen with three atoms that can harm people near the ground but helps
a kind of oxygen with three atoms that can harm people near the ground but helps block harmful rays high above the earth.
Hot afternoons often bring high ozone levels across the city.
collocation: high ozone levels
The weather app warned runners about ozone near the ground.
pattern: ozone near the ground
Scientists track ozone in the upper atmosphere each spring.
In summer, car exhaust and sunlight can create ozone over busy roads.
The school canceled soccer practice when ozone reached unsafe levels.
- O3
the scientific formula, used in technical writing rather than normal conversation
- ozone gas
a fuller phrase used when speakers want to make the substance explicit
- ground-level ozone
specifically the harmful ozone close to the earth's surface
文法句型
ozone levels rise/fall
high ozone near the ground
ozone in the upper atmosphere
用法筆記
Usually uncountable and often mentioned in reports as a measured level rather than as a simple substance name. Distinguish harmful ground-level ozone from the protective ozone higher in the atmosphere.
常見錯誤
2. fresh, pleasant air, especially the kind people notice at the seaside.
fresh, pleasant air, especially the kind people notice at the seaside.
Grandpa said the morning ozone made the beach walk worth it.
old-fashioned seaside use
After a week in Taipei, Mia wanted some ozone by the sea.
pattern: some ozone by the sea
The hotel brochure promised ozone and quiet hills above the bay.
The cousins opened the cabin windows to let in ozone from the shore.
For city children, the island's ozone felt cool and clean.
文法句型
some ozone by the sea
let in the ozone
enjoy the ozone
用法筆記
Usually found in older or literary descriptions, especially of places near the sea. In everyday modern English, most speakers would say 'fresh air' or 'sea air' instead.