这不是企业家的道德问题，而是理性的风险规避。在产权可能被侵蚀、政策可能逆转的环境中，最理性的选择就是不投资。
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。体育直播对此有专业解读
a naive implementation of derivatives would need to compute a transition for every possible character (up to 65536 in UTF-16). minterms fix this by partitioning the character space into equivalence classes where all characters in a class behave identically.
It is missing support for callables, UpdateClass, annotation