挑战在于让观众感受到一些东西，在情感层面上与他们建立联系。
The challenge is to make the audience feel something, to connect with them on an emotional level.
I would say that in the long run probably Communist China is likely to be in more of an expansionist phase than Soviet Russia...In their tactics, the Chinese Communists are probably the greater menace;
变革时期的领导力既需要远见，也需要做出艰难决定的勇气。
量子算法有可能彻底改变密码学和材料科学等领域。