Today's Sentence
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If you actually measure sleep in current populations in the United States or in Europe, they're definitely at the low end of what's been reported.
Key Vocabulary
1. measure
measure
[ˈmeʒ.ɚ] (v.)
2. population
population
[pɑː.pjəˈleɪ.ʃən] (n.)
3. low-end
low-end
[ˈlō-ˌend] (adj.)
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