整数或字符串等基元类.A primitive class as integer or string.但是对于这些,我们并不需要元类.But we do not need metaclasses for that.然而在这次介绍中,我们将避免元类, 由于它们弊大于利.We will avoid metaclasses in this presentation, however, since they bring more problems...
I was required to hold out my arms and flex my pectorals.我被要求伸展手臂，收紧胸肌。Take a comfortably wide stance and flex your knees a little.双腿适度分开站立，双膝稍稍弯曲。Side cutters are useful for cutting electrical flex to length.切边钳适用于剪切电线....