租几颗上亿元的卫星，能拍到什么？
Basic info
Material infomation
🇨🇳 Chinese
TechnologyEducation
11 min
1,899 words
698 unique words
Advanced
≈4.2% new words at a 8,000-word vocabulary, raised one level by the fast native-paced speech (225 wpm)
Vocabulary coverage
Share of the text added by each frequency band (1k = 1,000 words)
52%
50011%
1k7.6%
2k6.5%
3k11%
5k6.5%
8k2.5%
12k2.6%
20k0.9%
30kCore words
Words this material leans on unusually often.
Trickiest words
The rarest words in this material.