Once they are back in the intestines, the larvae mature into adult roundworms.
幼虫返回肠道后会发育为成熟的蛔虫。
infestation of the human intestine with Ascaris roundworms.
人体的肠内有大量的蛔虫。
Experiments had showed that starvation made roundworms live longer.
实验表明，饥饿让蛔虫活的时间更长。
Possible culprits included ticks, roundworms and certain microbes.
可能的病原包括蜱，蛔虫和特定的微生物。
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