有了上述三段代码，获得一个提要就十分轻松了，如清单4所示。

Given these three pieces of code, Listing 4 shows how easily to get a feed.

youdao

有了上述三段代码，获得一个提要就十分轻松了，如清单4所示。

Given these three pieces of code, Listing 4 shows how easily to get a feed.

youdao