Just navigate the site and read about the different campaigns and activities described. Here you will find more information about the activities that have been chosen, and 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，您可以找到有关已选择活动的更多信息，以及如何为每个活动做出贡献的具体说明。