硬币
1.For example, you put two coins in your pocket. And there is a hole in your pocket. What is left in your pocket?
比如说，你在你的兜里放了两个硬币，但是兜漏了一个洞，你兜里还剩下什么？
2.Generally speaking, the RMB is the only one, but it only accepts 5 yuan, 10 yuan and 20 yuan note, and the coins.
一般说来，只有人民币，但是它只接受五块钱，十块钱，二十块钱的纸钞，还有硬币。
