I have a three-year old daughter. To teach her basic science knowledge, I always play some interesting games with her. One of her most favorite games is “raining ice cube”. We put an ice cube above a glass of a little hot water. Some seconds later, tiny water droplets will fall down like a lovely “rain”.
February comes, new season greets us with drizzling rain whose tiny droplets dampen our hair and shoulders, running down our windows and blurring the world across the pane. 更多
