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global warming
Global warming is a big issue that affects all of us.
a terrestrial planet
A terrestrial planet may have an environment similar to Earth.
(geology, physics) geophysics
He is an expert in geophysics.
(physics) photoelectric effect
The photoelectric effect is a phenomenon where a material emits electrons after absorbing light.
cost-effectiveness, performance or quantity per cost
We need to evaluate the cost-effectiveness of this project.
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