说明：  CAI计算机硬件模拟，可以自由拖动组合，懂action的交流，懂隐形按钮的下，都不懂的别下了，省得说是垃圾！
(CAI computer hardware simulation, free scrolling portfolio, and an understanding of the exchange action, understand the stealth button, we do not understand the other under a save that was rubbish!)