The key characteristic of this approach is that it requires a substantial user input and human interaction and thus they tend to be less dynamic and less on-demand.
这种方法的关键特征是它需要大量用户的输入和人的干预，所以这变得相对不动态、不随需而变。
Characteristic based -for example offering the product for free for one user (so it is based on company size for instance).
基于特性——比如向某一个用户提供免费产品(例如公司规模的用户)。
A characteristic of Ajax applications is an improved response on the user interface.
Ajax应用程序的特点是用户界面上的响应有所改进。
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