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(archery, rare) an archery target
He drew his bow aiming at the target.
adjective
In order to reduce food waste, we should plan our food consumption.
state of emergency (governmental decree)
The government declared a state of emergency to prevent the spread of the new coronavirus.
proactive, positive, active, constructive
He always proactively suggests new ideas.
a greenhouse gas
Reducing greenhouse gas emissions is important for environmental protection.
cost-effectiveness, performance or quantity per cost
We need to evaluate the cost-effectiveness of this project.
(physics) photoelectric effect
The photoelectric effect is a phenomenon where a material emits electrons after absorbing light.
excavator
My father bought a new excavator.
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