The beauty of virology is that viruses teach us the rules of life by breaking them.
The poet is a liar who always speaks the truth.
可持续发展不再是可选项;它是任何希望在未来蓬勃发展的企业的必需品。
最大的荣耀不在于永不跌倒,而在于每次跌倒后都能站起来。