名词
中文翻译：Unknown
同义词：
['active substance', 'active principle']
例句：
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1.The new drug contains an active ingredient that has been shown to be effective in treating certain diseases.
这种新药含有一种活性成分，已被证明对治疗某些疾病有效。
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2. The manufacturer claims that the active ingredient in their product is safe for consumption.
制造商声称他们产品中的活性成分是安全的，可以食用。
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3. The study found that the active ingredient in this herbal supplement could help improve cognitive function.
研究发现，这种草本补充剂中的活性成分可以帮助改善认知功能。