密码学是关于在存在对手的情况下进行通信的。
The only limit to our realization of tomorrow will be our doubts of today.
粉丝们的每一个点赞、评论和分享对我来说都意义重大——就像通过屏幕得到一个拥抱。
A team's ceiling is often determined by the leader's cognitive boundaries.