有些结对编程者认为轮换是实践中可选的部分，而且在小型团队或者是没有几个程序员愿意结对的团队中，可能没有其它的选择。
Some pair programmers regard rotation as an optional part of the practice, and on a small team, or with few programmers willing to pair, there might be little alternative.
然而，在实践中要防止虚拟物品的交易是很困难的，而且现在还出现了一些专门的虚拟物品交易平台来让玩家购买与销售游戏中的物品。
In practice, however, preventing trade in virtual items is difficult, and several dedicated trading platforms have emerged to enable players to buy and sell in-game items.
希望我已经阐明，良好的语义设计不仅仅是一堆理论，而且能够在XML技术实践中应用。
I hope I've helped demonstrate that good semantic design is not just a pretty bit of theory, but a consideration that you can apply to all your work with XML technology.
应用推荐