1 . In order not to hurt my knees or ________(踝), I started my training very gently by running just one kilometer on the first day. (根据汉语提示单词拼写)

2 . Nowadays there are hundreds of thousands of news apps and official news media accounts on social media, with a total ________ (会员数) of over 700 million in China. (根据汉语提示单词拼写)