最原始的写法: 40cd97b210609c975e8d7ba619ef72f9000 结果:702-968ms 改进的写法: 40cd97b210609c975e8d7ba619ef72f9001 结果:484-600ms 另外一种写法: 40cd97b210609c975e8d7ba619ef72f9002 结果:674-826ms...