在什么情况下，侵权人可以不承担责任或减轻责任？Under what circumstances can the infringer waive or mitigate liability?
答:《侵权责任法》规定，在下列情况下，侵权人可以减轻或不承担责任：
(1)被侵权人对损害的发生也有过错的，可以减轻侵权人的责任。
(2)损害是因受害人故意造成的，行为人不承担责任。
(3)损害是因第三人造成的，第三人应当承担侵权责任。
(4)因不可抗力造成他人损害的，不承担责任。法律另有规定的，依照其规定。
(5)因正当防卫造成损害的，不承担责任。正当防卫超过必要的限度，造成不应有的损害的，正当防卫人应当承担适当的责任。
(6)因紧急避险造成损害的，由引起险情发生的人承担责任。如果危险是由自然原因引起的，紧急避险人不承担责任或者给予适当补偿。紧急避险采取措施不当或者超过必要的限度，造成不应有的损害的，紧急避险人应当承担适当的责任。
Answer: According to the Tort Liability Law, the infringer may reduce or waive liability in the following circumstances:
(1) If the victim is also at fault for the occurrence of damage, the liability of the infringer can be reduced.
(2) The damage was intentionally caused by the victim, and the perpetrator is not responsible.
(3) The damage is caused by a third party, and the third party shall bear the liability for infringement.
(4) Those who cause damage to others due to force majeure shall not be held responsible. If there are other provisions in the law, they shall prevail.
(5) Those who cause damage due to legitimate defense shall not be held responsible. If legitimate defense exceeds the necessary limit and causes undue damage, the legitimate defender shall bear appropriate responsibility.
(6) If damage is caused due to emergency avoidance, the person who caused the danger shall bear the responsibility. If the danger is caused by natural reasons, the emergency shelter shall not be held responsible or provide appropriate compensation. If the emergency measures taken are inappropriate or exceed the necessary limits, causing undue damage, the emergency evader shall bear appropriate responsibility.