Advice like these are not laws. They are like hats. If one doesn’t fit, try another.
Technology is just a tool. In terms of getting the kids working together and motivating them, the teacher is most important.
【释义】若不是在正午半夜的时候,连太阳和月亮都看不见。描绘了三峡峡谷幽深、遮天蔽日的景象。