re·agent /riˈeʤənt/
試藥,試劑,反應物
re·agent /rɪˈeʤənt/ 名詞
試劑,反應物
Re·a·gent n. Chem. A substance capable of producing with another a reaction, especially when employed to detect the presence of other bodies; a test.
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reagent
n : a chemical agent for use in chemical reactions