transform(chunk, controller) {
其次，市场规模太小，撑不起业绩反转。
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简单讲，要做L3，需要先做L2积累数据。那么要做L4，也一样依赖L3的数据。技术上他们是一脉相承的，不存在一口就能吃个胖子的技术路线。
It’s true that Daggerfall included an entire continent’s worth of content, but it was mostly composed of procedurally generated liminal space. By contrast, Morrowind contained just a single island—not even the entire province after which the game was named. The difference was that it was handcrafted.