肉毒素是A型肉毒杆菌的商业名称。它是一种由肉毒梭菌产生的神经毒素，能阻止是肌肉活动的神经信号。
Botox, the commercial name of botulinum toxin type a, is a neuro-toxin produced by Clostridium botulinum. It can block the signals that make your muscles move.
据科曼和西林萨克斯说，是因为“高纯度的肉毒毒素是目前科学已知的最致命的毒素”。
Rather, it is the fact that botulinum neurotoxin, in its pure form, is "the deadliest substance known to science," according to Coleman and Zilinskas.
通过麻痹用于皱眉的面部肌肉，A型肉毒毒素或肉毒杆菌毒素使人们无法表达人体自然流露的消极情绪。
By paralyzing the facial muscles used for frowning, Botulinum Toxin a - or Botox - prevents people from physically displaying expressions of negative emotion.
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