like validation rules for input. In other ways, they were very primitive,
- Include sensible aggregate metrics, e.g. number of comments on the video.
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圖像來源，Serenity Strull/ BBC
Dirty Business, The Lady, Mandelson’s arrest – are they truth, ‘faction’ or just more drama? | Simon Jenkins
· 郭瑞 · 来源：class资讯