おーつき 🌲 Retweeted 宮下芳明 Homei Miyashita
フェノールフタレイン溶液とかBTB溶液とかひっさびさに聞いた…!https://twitter.com/HomeiMiyashita/status/909736900772093952 …
おーつき 🌲 added,
6:29 AM - 21 Sep 2017
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