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penumbral
UK
/pɪˈnʌm.brəl/
US
/pəˈnʌm.brəl/
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AI Expert
Explain what “penumbral” means in the example and how it relates to a partial shadow.
Compare “penumbral” with “umbra” and “partial” in meaning and usage.
Show how “penumbral” is formed and identify its part of speech.
Give five natural collocations with “penumbral” and translate them.
Give three B2-level examples of “penumbral” in astronomy and everyday descriptions.
Explain when “penumbral” sounds too technical and suggest more common alternatives.
Write a sentence with “penumbral,” and I’ll check whether it sounds natural.
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