而当许多人生来就表现出生命的奇迹的时候，他们为许多有关先天和后天的案例提供了重要的线索。

And while multiple births represent one of the great wonders of life in their own right, they provide important clues in the mysterious case of nature versus nurture.

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One kind of response is called the innate response and innate means that it's present from the beginning.

其中之一称为先天性免疫反应,先天的意思是生来就有的

耶鲁公开课 - 生物医学工程探索课程节选