The laws never change, as the sunrise and sunset, the day and night, tide rises and falls.

重复不变的就是规律，如日出日落，白天黑夜，潮起潮落等等。

youdao

The laws never change, as the sunrise and sunset, the day and night, tide rises and falls.

重复不变的就是规律，如日出日落，白天黑夜，潮起潮落等等。

youdao