作者以某家门阶旁的新生儿为例想要说明什么？

What does the author try to illustrate with the example of the newborn on one's doorstep?

youdao

模型装配的简要说明印在盒子上。

Simple directions for assembling the model are printed on the box.

《牛津词典》

首先我要说明一下游戏规则。

First, I'll explain the rules of the game.

《牛津词典》

Now I spoke last time about the familiar sense of hesitation, that apology with which Milton had opened the elegy.

我要最后一次说明一下弥尔顿写在挽歌开头的，那句道歉，那种熟悉的犹疑感。

耶鲁公开课 - 弥尔顿课程节选

That's a sign to me that we're not there yet and we have a lot more to do in finance.

很明显，我们并没达到那个边界,这说明我们在金融领域还有很多事情要做。

耶鲁公开课 - 金融市场课程节选

And what I argue is these are our values, these are ideals, these are the things we look up to.

我要说明的是,这些是我们的价值观，是理想，是我们所向往的。

普林斯顿公开课 - 国际座谈会课程节选