designer drug
noun [ C ] uk/dɪˈzaɪ.nə ˌdrʌɡ/ us/dɪˈzaɪ.nɚ ˌdrʌɡ/
（通过某种改变而使其药力与海洛因等非法毒品近似的）特制致幻药
any of various strong drugs that has been changed to give it a similar effect to an illegal drug such as cocaine
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