哪根蜡烛先掉下？哪根蜡烛最后掉下去？

Which candle falls first? Which candle falls last?

youdao

开始，让我们先创建一个根元素，并将其添加到文档中。

To begin, let's create the root element and add it to a document.

youdao

开始，让我们先创建一个根元素，并将其添加到文档中。

To begin, let's create the root element and add it to a document.

youdao