The return value -- here stored in the $rss variable -- does not point to the entire document, as you might expect from experience with other APIs such as the Document Object Model (DOM).

返回值（这里存储在 $rss变量中）并没有指向整个文档，如果使用过其他API如文档对象模型（DOM）您可能会这样期望。

youdao

The return value -- here stored in the $rss variable -- does not point to the entire document, as you might expect from experience with other APIs such as the Document Object Model (DOM).

返回值（这里存储在 $rss变量中）并没有指向整个文档，如果使用过其他API如文档对象模型（DOM）您可能会这样期望。

youdao