最原始的写法: a504627433ee70e1db6d711f405ddfac000 结果:702-968ms 改进的写法: a504627433ee70e1db6d711f405ddfac001 结果:484-600ms 另外一种写法: a504627433ee70e1db6d711f405ddfac002 结果:674-826ms...