科学快报-科学美国人Science Quickly, from SCIENTIFIC AMERICAN
Or it's their loved ones who were aggressed, and they fight back to protect their loved ones, to protect themselves.
或者是他们的亲人受到了侵犯,他们反击以保护亲人、保护自己。
英语百科
Aggression
Aggression is overt, often harmful, social interaction with the intention of inflicting damage or other unpleasantness upon another individual. It may occur either in retaliation or without provocation. In humans, frustration due to blocked goals can cause aggression. Submissiveness may be viewed as the opposite of aggressiveness.