2 sentences

1. 他是这个大型门户网站的站长。

   tā shì zhè gè dà​xíng mén​hù wǎng​zhàn de zhàn​zhǎng.

   He is the webmaster of this large portal website.

   Source: Dong Chinese Dictionary

2. 这家公司经营着国内最大的门户网站。

   zhè jiā gōng​sī jīng​yíng zhe guó​nèi zuì dà de mén​hù wǎng​zhàn.

   This company operates the largest web portal in the country.

   Source: Dong Chinese Dictionary