legal high
noun [ C ] uk/ˌliː.ɡəl ˈhaɪ/ us/ˌliː.ɡəl ˈhaɪ/
合法致幻药品（可以达到毒品效果、尚未被列为非法的药品）
a drug that is taken for pleasure and has the same effect as an illegal drug, but has not been made illegal
Doctors have said that legal highs should be subject to more controls. 医生们说合法致幻药品因受更严格管制。