However, it can become difficult to compute the possible moves on the board, because the computer must check the bounds and the locations of the pieces over and over.
然而，它难以计算在棋盘上行棋的可能性，因为计算机必须检查棋盘的边界，越来越多的棋子位置。
2
Check out Day 5 of 30dlbl on creating your vision board.
可参照30dlbl中第5日，创建你的愿景板一章。
3
For instance, in the Windows 2000 operating system, the ClipBook service allows anyone who connects to the Internet check your clip board.