Just navigate the site and read the different areas and activities described. There you will find more information on why the activities have been chosen, and concrete instructions on how to contribute to each of them.
只需浏览网站并阅读所描述的不同区域和活动。在那里，您可以找到有关选择活动的原因的更多信息，以及如何为每个活动做出贡献的具体说明。