If we click backward through the stack, the forward button lights up.
如果在堆栈中回退,前进按钮就变亮了。
Later on in the method, NSStack can be used to add a new namespace and search through the stack for the prefix given a URI.
稍后在这个方法中,可以用NSStack来添加一个新的名称空间,还可以用它在整个堆栈中搜索给予一个URI的前缀。
Because the more CARDS you have in your stack, the more time passes before you go through the stack and return to a card you've studied before — that is, larger stacks create more spacing.
因为你的这叠里的卡片数越多,你用来复习的时间越长- - - - - -也就是说,更多的词汇卡会产生更多的间隔学习时间。
应用推荐