Because the autumn and summer are different,the reason that autumnal insolation compares not easy subsidise is, autumnal weather turns cool, cutaneous metabolism also begins the reason of decline.

• 秋天的日晒比较不容易消退的原因是因为秋天和夏天不同，秋天天气转凉，皮肤的新陈代谢也开始衰退之故。