The reflex, to restrict and ban, has worked (albeit far from perfectly) for more traditional sorts of biological weapons.
为了限制、禁止这一不良后果（尽管不禁完美），对于很多传统生物武器来说依然奏效。
It is almost impossible to pass federal laws to restrict access to the most powerful semi-automatic weapons.
通过联邦法律来限制威力最强的的半自动武器的获取途径几乎是不可能的。
It is almost impossible to pass federal laws to restrict access to the most powerful semi-automatic weapons.
通过联邦法律来限制威力最强的的半自动武器的获取途径几乎是不可能的。
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