亲身实测！熬夜48小时，我的身体出现了变化……
Basic info
Material infomation
🇨🇳 Chinese
HealthTechnology
20 min
2,385 words
811 unique words
Advanced
≈5% new words at a 5,000-word vocabulary, raised one level by the fast native-paced speech (220 wpm)
Vocabulary coverage
Share of the text added by each frequency band (1k = 1,000 words)
55%
50010%
1k7.2%
2k9.0%
3k8.1%
5k5.5%
8k1.8%
12k2.4%
20k1.2%
30kCore words
Words this material leans on unusually often.
Trickiest words
The rarest words in this material.