问题是，每当用户需要移动到另一个页面时，都必须发送一个请求到服务器，从而导致页面使用新的数据集重新加载。

The problem is, each time the user needs to move to a different page, you must send a request back to the server, which would cause the page to reload with the new set of data.

youdao

第一个问题是对于数据何时被加载没有任何提示。

The first problem is that there's no indication of when the data has been loaded.

youdao

延迟抓取的另一个问题就是在获取到请求的数据前要一直打开数据库连接，否则应用就会抛出一个延迟加载异常。

Another issue with lazy fetching is that the database connection has to be retained until all the required data is fetched else the application will throw a lazy loading exception.

youdao