Englishfor English speakers
hazardous
—
adjective
(= risky, wild)
involving risk or danger
skydiving is a hazardous sport
extremely risky going out in the tide and fog
a wild financial scheme
air
Noun
—
Air is a mixture of gases. It has no color or odor (smell)
We breathe air to live.
—
You put on airs when you act arrogantly.
The woman put on the airs in front of her friends.
air
Verb
—
If you air something, you broadcast it, either over the radio, or on television.
Hurry! You'll miss the story about homeless children that is about to air on the local news!
pollution
Noun
—
Pollution is when bad or harmful things are put into the environment.
Nobody visits the river any more because of all the pollution.
—
Pollution is the state of being polluted.
standards
noun
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Principles of conduct shaped by traditional morality, decency, and honor.
standards
adjective
—
Pertaining to standards, concerned with standards, specific to standards.