If the character is an operand, push it onto the stack.

如果字符是一个操作数，把它压入堆栈。

youdao

The list of directories ACTS like a stack — you push a directory onto the top of the stack, and pop a directory off the top again to get it back.

该目录列表的行为就像一个堆栈——您将一个目录压入堆栈顶部，并从顶部弹出一个目录以取回它。

youdao

When you want to go to another page, you push your view Controller (and associated view) onto the view Controller stack.

在你导向另外一个页面的时候，就把视图控制器放到视图控制器堆栈中。

youdao