Other examples are floodplains,which receive excess water during heavy rains and floods,and the wet arctic tundra in summer. Some wetland are huge;others are small.

• 其他的例子是冲积平原，其中接收多馀的水在大雨和洪水和湿北极苔原在夏季。有些湿地是巨大的，其他都是小。