Counter-attacking the infringement from a person without ability of responsibility should be considered as defensive necessity.

对无责任能力人的侵袭予以反击行为应属于防御性紧急避险。

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But he shows as little interest in mastering even the most basic facts about the person he is attacking as he does when discussing the question of cell phones and brain cancer.

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"We are attacking the disease, from each person taking the responsibility for good hygiene and healthy habits, " said Ann Kleva, the university's director of health services.

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