当一页内有很多物体时（比如由于mods，商人售卖页面加入了很多把枪），怎么翻页让我能浏览到所有枪呢。
PS：同样的情况也发生在基地枪匠页面，不过似乎二者的页面作用方式不同

When there are many objects on a page (such as many guns added to the merchant's sales page due to mods), how can I flip through the pages so that I can browse all the guns.
PS: The same situation also occurs on the base gunsmith page, but it seems that the two pages function differently