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Chickenpox is often more serious in very young infants and adults.
，更多细节参见爱思助手
"_id": "7b0c3a06-7de7-4f44-963e-656a050fbff8",。业内人士推荐PDF资料作为进阶阅读
Source spans + generic formatting. Covers 90% of cases，更多细节参见PDF资料
Simplest. No codegen, no runtime. Slow (10–100× native)