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when toggle format what by license comment
Sep 20, 2020 at 7:14 comment added Hiroshi Inagaki Em, thank so much for your kind and detailed answer! I have clearly understood the meaning of the sentence.
Sep 20, 2020 at 3:18 history edited Em. CC BY-SA 4.0
added 336 characters in body
Sep 20, 2020 at 2:51 history answered Em. CC BY-SA 4.0