In Chapter 25, we discuss these issues at length, but for now, suffice it to say that they are high in excise and should be eliminated from your applications whenever possible.

• 在第25章中我们会详细讨论这些问题，但现在仅仅需要指出它们是严重的附加工作，并且是任何情况下都应该从应用中清除。