• previous ⪢⪢
http://qindex.info/i.php?x=12286

• previous ⪢⪢
http://qindex.info/i.php?x=21563

○○○ pneumonia ⪢⪢
In December 2019, there was a cluster of pneumonia cases in China. Investigations found that it was caused by a previously unknown virus, now named the 2019 Novel Coronavirus.
http://qindex.info/i.php?x=7218

○○○ improve ⪢⪢
He studied hard to improve his test scores from the previous year.
http://qindex.info/i.php?x=14543

○○○ Φ ≈ 1.618 ⪢⪢
Keplar observed that the relationship between a number in the Fibonacci sequence and the previous number more and more closely approaches the irrational number Φ, the longer the sequence is continued. #math #bookmark
http://qindex.info/i.php?x=9464

• 1571 - 1630 Johannes Kepler
Keplar observed that the relationship between a number in Fibonacci sequence and the previous number more and more closely approaches the irrational number Φ the longer the sequence is continued and Φ describes nothing other than the golden section.
http://qindex.info/i.php?x=5056

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