In modern times, teenagers have a preference for popular music, which has something to do with the agecharacteristic and time background.
当代青少年偏爱流行通俗音乐，这与年龄特征和时代社会背景有关。
2
Through the past scene of children life, we can dimly find the life style, area feature, agecharacteristic and change trace of the children life in that history period.
透过往昔儿童生活场景，可以依稀发现一个历史时段儿童的生活方式、区域特色、时代特征以及演变痕迹。
3
In the teaching, the teacher should act according to student's agecharacteristic and the cognitive capacity, expands the Trans-Culture knowledge gradually the content and the scope.