这表示可以有多个这样的子元素，这完美地解释了在一个典型购买订单中可以包含多个不同的条目。

This means that there can be many of them, which makes perfect sense because a typical purchase order may contain many different items.

youdao

这表示可以有多个这样的子元素，这完美地解释了在一个典型购买订单中可以包含多个不同的条目。

This means that there can be many of them, which makes perfect sense because a typical purchase order may contain many different items.

youdao