Everyone is striving for their own survival in reality.
在现实中,每个人都在为生存而努力。
该句使用进行时结构强调持续性的生存状态。
"Enemies become allies mostly for survival"
"The way an antelope escapes a lion is by running faster than the lion."
"By sacrificing a leg, the wolf preserves its life."
"Scientists have discovered that because they lack swim bladders, sharks will sink if they stop moving."
"A lion appeared and ate his donkey."