If a physical change like that led to better toolmaking, then its owner would have survived better.
如果这样的身体变化导致更好的工具制造,那么变化的拥有者能够更好地存活下来。
The immune system is interesting, because it protects its owner from pathogens without needing to know what a pathogen will look like.
免疫系统之所以有趣在于它能保护人体免于病原体的侵袭而无需知晓病原体的样子。
Someday I'd like to be able to do for that horse half of what you do for its owner.
我希望,有朝一日,我能为这匹马所做的事赶得上你为你主人所做的一半。
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