【中文版】

门户广告是一种网络广告形式，通常出现在大型综合性网站或门户网站上。这些网站通常拥有大量的用户和流量，因此门户广告具有很高的曝光率和传播效果。

门户广告的主要形式包括横幅广告、按钮广告、通栏广告等。这些广告通常以图片、文字或者视频的形式出现，具有很强的视觉冲击力和吸引力。此外，门户广告还可以通过关键词广告、搜索广告等方式进行精准投放，提高广告的针对性和效果。

门户广告的优势在于其覆盖面广、传播效果好、针对性强。门户网站的用户群体通常比较广泛，包含了各个年龄段、职业和兴趣爱好的人，因此门户广告能够有效地覆盖潜在客户群体。同时，门户广告的传播效果也非常好，能够通过点击率和曝光量的统计数据来衡量广告效果，为广告主提供可靠的反馈和依据。

但是，门户广告也存在一些问题。首先，门户网站的广告位通常比较有限，竞争激烈，广告主需要付出较高的费用才能获得曝光和传播机会。其次，门户广告的针对性相对较低，虽然可以通过关键词等方式进行投放，但无法做到精准无误地针对目标客户群体。

总之，门户广告是一种常见的网络广告形式，具有广泛的应用和影响力。对于广告主来说，合理利用门户广告可以有效地提高品牌知名度和销售额。

【英文版】

Portal advertising is a form of online advertising that typically appears on large-scale comprehensive websites or portals. These websites usually have a large number of users and traffic, so portal advertising has a high exposure rate and communication effect.

The main forms of portal advertising include banner advertising, button advertising, full-page advertising, etc. These advertisements usually appear in the form of images, text, or videos, with strong visual impact and attractiveness. In addition, portal advertising can also be accurately delivered through keyword advertising, search advertising, and other ways to improve the relevance and effectiveness of the advertisements.

The advantages of portal advertising lie in its wide coverage, good communication effect, and strong relevance. The user group of the portal website is usually relatively broad, including people of all ages, occupations, and interests, so portal advertising can effectively cover potential customer groups. At the same time, the communication effect of portal advertising is also very good, which can be measured by click-through rate and exposure volume statistics to provide reliable feedback and basis for advertisers.

However, there are also some problems with portal advertising. Firstly, the advertising space on portal websites is usually limited, and competition is fierce. Advertisers need to pay high fees to obtain exposure and communication opportunities. Secondly, the relevance of portal advertising is relatively low. Although it can be delivered through keywords and other ways, it cannot accurately target the target customer group.

In summary, portal advertising is a common form of online advertising with wide application and influence. For advertisers, reasonable use of portal advertising can effectively improve brand awareness and sales.