能一次性产生多组随机数。如果有些数字不想产生可以动态地剔除。可以控制产生随机数的范围，个数。功能很强大，交互式！-Can produce a one-time multiple sets of random numbers. If some do not want to produce can be dynamically removed. can control to produce the range of random numbers, the number of Very powerfu