When the implementation of the steps may need to vary at run time. Concrete inheritance can't accommodate this; delegation can.
当这个实现的步骤需要在运行时变化。类继承不能适应这个，代理能。
Please understand that the results for this will vary, and some people will be in very high states of consciousness and will need to just relax for sometime before traveling home.
有些人会在一个很高的意识状态，在离开回家之前必须要放松一段时间。
For the purpose of this post, we need a reasonable number to start, so we'll use the Numbers in Figure 2. Your mileage will vary.
为了阐明这篇文章的目的，我们需要从一个合理的数字开始，所以我们将使用图2中的数字，每个人花费的时间可能不尽相同。
For the purpose of this post, we need a reasonable number to start, so we'll use the Numbers in Figure 2. Your mileage will vary.
为了阐明这篇文章的目的，我们需要从一个合理的数字开始，所以我们将使用图2中的数字，每个人花费的时间可能不尽相同。
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