The dead are gone and they cannot defendthemselves.
逝者已逝,他们无法保护自己。
2
Aggression is a kind of innate survival mechanism, an instinct for self preservation, that allows animals to defendthemselves from threats to their existence.
攻击性是一种天生的生存机制,一种自我保护的本能,使动物能够保护自己不受生存威胁。
3
The researchers explained that the study demonstrated when we are in a novel environment the brain partly remains alert so that humans can defendthemselves against any potential danger.