人无喜事精神减,运到穷时落寞多。
释义:人如果没有喜事,精神就会萎靡不振;当运气不好、处境艰难时,往往会感到更加落寞和失落。
The greatest risk is not taking one.
现代密码学的挑战不仅是确保通信安全,而且要以既高效又可扩展的方式实现。
Sometimes the hardest thing to do is nothing at all.
The greatest threat to our planet is the belief that someone else will save it.