They're doing tests to evaluate the effectiveness of this herb as an antiseptic.他们正通过试验来评估这种草药作为杀菌剂的有效性。Many of the ingredients for antiseptics come from the rainforests.很多杀菌剂的原料产自热带雨林。The antiseptic might sting a little.这杀菌剂可能会引起一点刺痛感。Mint is a mild antiseptic.薄荷是一种温和的杀菌剂。