When answering this question, you can compare the advantages and disadvantages of online and offline advertising. Online advertising is often seen as more effective nowadays because it can reach a larger audience quickly, is more targeted, and allows for easier tracking of results. On the other hand, offline advertising, like billboards or flyers, can be more memorable in certain situations and may reach people who aren’t always online. You can also mention that the effectiveness depends on the product, target audience, and goals of the campaign. Giving examples can help make your answer clearer.

回答这个问题时，你可以比较线上广告和线下广告的优缺点。如今线上广告通常被认为更有效，因为它可以快速覆盖更广泛的受众，定位更精准，并且更容易跟踪效果。另一方面，线下广告，如广告牌或传单，在某些情况下可能更令人难忘，并且能够触及那些不经常上网的人群。你还可以提到广告的效果取决于产品、目标受众和活动目标。举例说明有助于使你的回答更清晰。