少数人是幸运的，很早就明白他们喜欢数学或照顾动物或写作，然后想办法花费大量时间在这件事上。
A few are lucky and realize early on that they love math or taking care of animals or writing, and then figure out a way to spend a lot of time doing it.
老鼠或鸽子可能并不是用来照顾病人的明智选择，但这些动物拥有更高级的技能，可以帮助治疗人类疾病。
A rat or pigeon might not be the obvious choice to tend to someone who is sick, but these creatures have some superior skills that could help the treatment of human diseases.
由于有的受了伤或精疲力尽，他便照顾起这些动物。
He had taken care of the animals, for some had been wounded or were exhausted.
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