chemical indicator
(chemistry) any substance used to classify another, often by changing colour
(Christianity) To lose God's favour through sins or wrongdoings. / (figuratively, idiomatic) To fall from one's current social position to something lower, to lose one's prestige, status or power.
A noteworthy person.
Third-person singular simple present indicative form of unchest
学生たちは溶液が酸性か塩基性かを判定するために、色が変わる指示薬を使った。
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