Reading: Sagan
Also known as -
(1) Left bank refers to the bank on the left side of a river when looking from upstream (upstream) to downstream (downstream) direction of the river. ⇔right bank (shore)(ray of) light
The expression "upstream viewpoint" came from the fact that people living upstream used to watch boats carrying goods necessary for daily life from downstream.
(2) A book by author Kaori Ekuni.
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