设计一个程序，演示美丽的“池塘夜雨”景色：色彩缤纷的雨点飘飘洒洒地从天而降，滴滴入水有声，溅起圈圈微澜-Design a program that demonstrates the beautiful " pond night rain" scene: Durian colorful rain to fall from the sky, drops into the water with sound, the splashes circle Ripples