For a Silicon Valley startup, you might need to focus on high conversions and optimization. If you’re working for authors, maybe you need to learn how to make their books look great.

比如对硅谷创业的人来说，必须了解集中精力于高转化率和优化上，比如对作家来说，必须让 书变的更好看。

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JIT compilation removed the overhead of interpretation (at the expense of some additional startup cost), but the level of code optimization was mediocre for several reasons.

JIT 消除了解释的负担（以额外的启动成本为代价），但是由于若干原因，代码的优化等级仍然是一般般。

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Note that AOT compilations are performed at a cold optimization level, which reflects the overall AOT goal to accelerate application startup.

注意，AOT 编译以 cold 优化级别执行，这反映 AOT 的总体目标是加快应用程序的启动。

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