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etymologise, etymologist, etymologize, etymology, etymon, etypic, EU, eu-, euabyssite, euacranthic,

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酸雾, 酸洗, 酸显法, 酸性, 酸性的, 酸性反应, 酸性降水, 酸性硫酸基的, 酸性染料, 酸性试验,