While there are countless sites and activities to look forward to when visiting Yellowstone Park, there are also some hazards you should be aware of. Watch this video before you go to Yellowstone to make sure you have both an enjoyable and safe experience.
https://www.msn.com/en-us/travel/news/watch-this-before-you-visit-yellowstone/vi-AA1qHcBg?ocid=socialshare
安全注意事项：
1. 公园内热喷泉温度很高，水的酸性和腐蚀性很强，不小心滑入会严重受伤或有生命危险，一定要保持在木栈道（board walk)上行走，不要从栈道下去, 有些土壤看似坚固，其实下面很可能被腐蚀，很薄弱，经不起人的重量
2. 与野生动物保持安全距离，不论是bison，wolf， 还是moose, 一定要保持安全距离。
3. 防熊
